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63c647895f004bf4898cf496

2023-02-03T07:26:44.950Z

Help Fix Code

v1

int truncate(char *target, int amt){ int leng = strlen(target); if (leng > amt){ return 0; } char result[45] = "abc" ; strncpy(result, target, amt); printf("This is the value of the truncated string: %s\n", result); return leng - amt ; }

supposed to take target and store the first amt characters in result.

63c647895f004bf4898cf496

2023-02-13T01:46:40.306Z

Help Fix Code

v1

int make_post(const User *author, User *target, char *contents) { if(author == NULL || target == NULL){ printf("Returning 2\n"); return 2; } //We only check in one list because we assume that make_friends works properly int flag = 0; for(int i=0; i<MAX_FRIENDS; i++){ if ((author->friends[i] != NULL) && (author->friends[i]->name == target->name)){ flag = 1; } } if(flag != 1){ //if flag == 1, then they are friends. So we return if != 1. return 1; } Post *newpost = malloc(sizeof(Post)); strcpy(newpost->author, author->name); newpost->contents = contents; time_t creation_time = time(NULL); *(newpost->date ) = creation_time; newpost->next = target->first_post; target->first_post = newpost; return 0; }

Make a new post from 'author' to the 'target' user, * containing the given contents, IF the users are friends. * * Insert the new post at the *front* of the user's list of posts. * * 'contents' is a pointer to heap-allocated memory - you do not need * to allocate more memory to store the contents of the post. * * Return: * - 0 on success * - 1 if users exist but are not friends * - 2 if either User pointer is NULL

63c647895f004bf4898cf496

2023-02-13T01:51:31.338Z

Help Fix Code

v1

typedef struct user { char name[MAX_NAME]; char profile_pic[MAX_NAME]; // This is a *filename*, not the file contents. struct post *first_post; struct user *friends[MAX_FRIENDS]; struct user *next; } User; typedef struct post { char author[MAX_NAME]; char *contents; time_t *date; struct post *next; } Post; int make_post(const User *author, User *target, char *contents) { if(author == NULL || target == NULL){ printf("Returning 2\n"); return 2; } //We only check in one list because we assume that make_friends works properly int flag = 0; for(int i=0; i<MAX_FRIENDS; i++){ if ((author->friends[i] != NULL) && (author->friends[i]->name == target->name)){ flag = 1; } } if(flag != 1){ //if flag == 1, then they are friends. So we return if != 1. return 1; } Post *newpost = malloc(sizeof(Post)); strcpy(newpost->author, author->name); newpost->contents = contents; time_t creation_time = time(NULL); *(newpost->date ) = creation_time; newpost->next = target->first_post; target->first_post = newpost; return 0; }

problem with newpost->date;

63c647895f004bf4898cf496

2023-02-13T02:19:56.199Z

Help Fix Code

v1

typedef struct user { char name[MAX_NAME]; char profile_pic[MAX_NAME]; // This is a *filename*, not the file contents. struct post *first_post; struct user *friends[MAX_FRIENDS]; struct user *next; } User; typedef struct post { char author[MAX_NAME]; char *contents; time_t *date; struct post *next; } Post; int make_post(const User *author, User *target, char *contents) { if(author == NULL || target == NULL){ printf("Returning 2\n"); return 2; } //We only check in one list because we assume that make_friends works properly int flag = 0; for(int i=0; i<MAX_FRIENDS; i++){ if ((author->friends[i] != NULL) && (author->friends[i]->name == target->name)){ flag = 1; } } if(flag != 1){ //if flag == 1, then they are friends. So we return if != 1. return 1; } Post *newpost = malloc(sizeof(Post)); strcpy(newpost->author, author->name); newpost->contents = contents; time_t creation_time = time(NULL); *(newpost->date ) = creation_time; newpost->next = target->first_post; target->first_post = newpost; return 0; }

I want to allocate memory on the heap for the current time. Then I want to set newpost->date to point to this time.

63c647895f004bf4898cf496

2023-02-13T21:29:42.186Z

Help Fix Code

v1

for(int i=0; i<MAX_FRIENDS - 1; i++){ if(strcmp(curr->friends[i]->name, name) == 0){ //deleted user is in the list. curr->friends[MAX_FRIENDS - 1] = NULL; //Last element must be NULL after deletion. int j = i; for(int j; j < MAX_FRIENDS-1; j++){ //from i(index with deleted user), shift over every element to the left curr->friends[j] = curr->friends[j + 1]; } } }

I want to iterate through elements up until a point. Then if I reach that point, I want to shift each element from that point onwards to the left.

63c647895f004bf4898cf496

2023-02-13T21:30:44.138Z

Explain Code

v1

for(int i=0; i<MAX_FRIENDS - 1; i++){ if(strcmp(curr->friends[i]->name, name) == 0){ //deleted user is in the list. curr->friends[MAX_FRIENDS - 1] = NULL; //Last element must be NULL after deletion. int j = i; for(int j; j < MAX_FRIENDS-1; j++){ //from i(index with deleted user), shift over every element to the left curr->friends[j] = curr->friends[j + 1]; } } }

63c647895f004bf4898cf496

2023-02-13T23:05:13.616Z

Help Fix Code

v1

User *current = *user_ptr_del; while(current != NULL){ printf("Now in %s\n", current->name); int i=0; for(i; i<MAX_FRIENDS - 1; i++){ if((current->friends[i] != NULL) && (strcmp(current->friends[i]->name, name) == 0)){ for(int i; i < MAX_FRIENDS-1; i++){ //from i(index with deleted user), shift over every element to the left printf("%s Old value: %s\n", current->name, current->friends[i]->name); current->friends[i] = current->friends[i + 1]; printf("%s New value: %s\n", current->name, current->friends[i]->name); } current->friends[MAX_FRIENDS - 1] = NULL; //Last element must be NULL after deletion. } } current = current->next; }

iterate through all of the User objects. For each user, it checks through the User's list of friends.

63c647895f004bf4898cf496

2023-02-15T20:22:09.563Z

Question from Code

v1

how would i free the space that is allocated to post->contents

typedef struct user { char name[MAX_NAME]; char profile_pic[MAX_NAME]; // This is a *filename*, not the file contents. struct post *first_post; struct user *friends[MAX_FRIENDS]; struct user *next; } User; typedef struct post { char author[MAX_NAME]; char *contents; time_t *date; struct post *next; } Post;

63c6478a5f004bf4898cf4a0

2023-01-30T18:40:51.261Z

General Question

v1

how can I scan multiple lines with scanf

63c6478a5f004bf4898cf4a0

2023-01-30T21:56:15.423Z

General Question

v1

/bin/bash: line 1: [: too many arguments

63c6478a5f004bf4898cf4a0

2023-01-30T22:23:11.436Z

General Question

v1

how to read a multiline string using scan f until the end of the string?

63c6478b5f004bf4898cf4a5

2023-01-17T18:40:22.766Z

General Question

v1

what is a pointer

63c6478b5f004bf4898cf4aa

2023-01-18T05:30:49.651Z

General Question

v1

what is wrong with this test error? phone_loop_checker.py::TestPhoneLoop::test_valid fail 0 / 1 c_helper.py:125: in _t stdout, stderr, returncode = self._run_exec(args=args, input_=input_, timeout=timeout) c_helper.py:85: in _run_exec return _exec([os.path.join(".", self.executable_name)] + (args or []), **kwargs) c_helper.py:475: in _exec raise e from e c_helper.py:471: in _exec stdout, stderr = proc.communicate(timeout=timeout, input=input_) /local/packages/python-3.10/lib/python3.10/subprocess.py:1152: in communicate stdout, stderr = self._communicate(input, endtime, timeout) /local/packages/python-3.10/lib/python3.10/subprocess.py:2004: in _communicate self._check_timeout(endtime, orig_timeout, stdout, stderr) /local/packages/python-3.10/lib/python3.10/subprocess.py:1196: in _check_timeout raise TimeoutExpired( E subprocess.TimeoutExpired: Command '['./phone_loop']' timed out after 2 seconds

63c6478b5f004bf4898cf4aa

2023-01-18T06:06:43.169Z

Help Fix Code

v1

int main() { char phone[11]; int i; scanf("%s", phone); do { scanf("%d", &i); if (i == -1) { printf("%s\n", phone); } else if (0 <= i && i <= 9) { printf("%c\n", phone[i]); } else { printf("ERROR"); return 1; } } while (i != 1); return 0; }

Your task is to write a C program called phone_loop.c. This program will again read from standard input using scanf and take no command-line arguments. Similar to phone.c, this program reads a 10-character string as the first input value but then it repeatedly reads integers until standard input is closed. (Hint: Use a while loop that checks the return value of scanf to accomplish this. Check the man page for scanf to determine the return value when the input stream is closed.) After each integer the output produced is as before: if the integer is -1, the full string is printed if the integer is between 0 and 9, the individual character at that position is printed if the integer is less than -1 or greater than 9, the message "ERROR" is printed (to stdout) In each case the printing is followed by a newline character. When the program finishes running, main returns with a 0 return code if there were no errors and with a 1 return code otherwise. Note: the program must not print anything other than then the values specified.

63c6478b5f004bf4898cf4aa

2023-01-18T06:17:09.656Z

Help Fix Code

v1

int main() { char phone[11]; int i; int result_to_check; scanf("%s", phone); do { result_to_check = scanf("%d", &i); if (i == -1) { printf("%s\n", phone); } else if (0 <= i && i <= 9) { printf("%c\n", phone[i]); } else { printf("ERROR"); return 1; } } while (result_to_check != EOF); return 0; }

Your task is to write a C program called phone_loop.c. This program will again read from standard input using scanf and take no command-line arguments. Similar to phone.c, this program reads a 10-character string as the first input value but then it repeatedly reads integers until standard input is closed. (Hint: Use a while loop that checks the return value of scanf to accomplish this. Check the man page for scanf to determine the return value when the input stream is closed.) After each integer the output produced is as before: if the integer is -1, the full string is printed if the integer is between 0 and 9, the individual character at that position is printed if the integer is less than -1 or greater than 9, the message "ERROR" is printed (to stdout) In each case the printing is followed by a newline character. When the program finishes running, main returns with a 0 return code if there were no errors and with a 1 return code otherwise. Note: the program must not print anything other than then the values specified.

63c6478c5f004bf4898cf4af

2023-01-21T05:17:53.406Z

General Question

v1

what does ls -s do

63c6478c5f004bf4898cf4af

2023-01-21T05:44:44.838Z

General Question

v1

what does the number next to total in the output of ls -l mean

63c6478c5f004bf4898cf4af

2023-01-21T06:21:26.514Z

General Question

v1

what is strtod in c

63c6478c5f004bf4898cf4af

2023-01-21T06:39:37.920Z

General Question

v1

why is the first argument of argv indexed at 1

63c6478c5f004bf4898cf4af

2023-01-21T06:41:55.803Z

General Question

v1

when creating strings in C, do we need one extra element to hold any special characters?

63c6478c5f004bf4898cf4af

2023-01-21T06:49:16.413Z

General Question

v1

how do I take in a string as an argument

63c6478c5f004bf4898cf4af

2023-01-21T06:54:55.484Z

General Question

v1

generate a detailed documentation of `fgets` with usage examples and explanations

63c6478c5f004bf4898cf4af

2023-01-21T07:38:32.368Z

General Question

v1

how do I store a 5 length string from the command line argument

63c6478c5f004bf4898cf4af

2023-01-21T07:41:14.230Z

General Question

v1

does c break conditionals early with &&

63c6478c5f004bf4898cf4af

2023-01-21T07:51:36.866Z

General Question

v1

how do I skip a line from the input with scanf

63c6478c5f004bf4898cf4af

2023-01-21T08:08:44.352Z

General Question

v1

how do I split a string

63c6478c5f004bf4898cf4af

2023-01-21T08:31:11.107Z

General Question

v1

string formatting doucmentation

63c6478c5f004bf4898cf4af

2023-01-21T08:41:47.326Z

General Question

v1

is this valid permission[10] = "---------\0";

63c6478c5f004bf4898cf4af

2023-01-21T09:03:38.625Z

General Question

v1

print without special characters

63c6478c5f004bf4898cf4af

2023-01-21T09:16:28.857Z

General Question

v1

how do you properly compare strings in c

63c6478c5f004bf4898cf4af

2023-01-21T09:23:05.125Z

Question from Code

v1

how would I properly point to the parameters

int check_permissions(char *current_perms, char *required_perms){ int i; for (i = 0; i < 9; i++) { if (strcmp(required_perms[i], "-") == 0 && strcmp(current_perms[i], "-") == 0) { return 1; } } return 0; }

63c6478c5f004bf4898cf4af

2023-01-21T09:27:28.336Z

General Question

v1

how do I compare a string literal with a element of a char array

63c6478c5f004bf4898cf4af

2023-01-21T09:41:02.596Z

Question from Code

v1

what does this format mean

%*[^\n]

63c6478c5f004bf4898cf4af

2023-01-21T09:41:46.825Z

General Question

v1

can you explain %*[^\n] in detail

63c6478c5f004bf4898cf4af

2023-01-23T02:01:23.510Z

General Question

v1

typecast bool to int in c

63c6478c5f004bf4898cf4af

2023-01-23T02:08:47.091Z

General Question

v1

how do I call helper functions from another file

63c6478c5f004bf4898cf4af

2023-01-23T02:23:15.638Z

General Question

v1

does c automatically convert integers to bools in conditionals

63c6478c5f004bf4898cf4af

2023-01-24T23:40:56.421Z

Question from Code

v1

is this valid

int *build_array(char **strs, int size) { int **array_pointer; array_pointer = malloc(sizeof(int) * size); int i = 0; for (i = 0, i < size;, i++) { strtol((*array_pointer)[i], NULL, 10); } return array_pointer; }

63c6478c5f004bf4898cf4af

2023-02-01T00:57:35.283Z

General Question

v1

provide documentation for strncmp

63c6478c5f004bf4898cf4af

2023-02-01T01:06:10.206Z

General Question

v1

does argc include the name of the file

63c6478c5f004bf4898cf4af

2023-02-01T01:28:52.955Z

Help Fix Code

v1

if (strlen(argv[1]) == strlen(argv[2]) && strncmp(argv[1], argv[2], strlen(argv[1]) == 0)) { printf("Same\n"); }

it should compare if the 2 strings are equal

63c6478c5f004bf4898cf4af

2023-02-01T02:10:47.376Z

General Question

v1

difference between string literal and constant

63c6478c5f004bf4898cf4af

2023-02-01T02:13:42.922Z

General Question

v1

does adding a null terminator in the middle of a stack allocated string change the pointer of the stack

63c6478c5f004bf4898cf4af

2023-02-01T02:25:23.315Z

General Question

v1

how do you check if 2 strings are equal

63c6478c5f004bf4898cf4af

2023-02-01T02:27:04.131Z

Explain Code

v1

char *a = argv[1]; char *b = argv[2]; if (*a == *b) { printf("Same\n"); }

63c6478c5f004bf4898cf4af

2023-02-10T19:57:29.226Z

General Question

v1

how do I check for memory leaks

63c6478c5f004bf4898cf4af

2023-02-15T00:32:11.598Z

General Question

v1

provide code for basic linked list traversal pattern

63c6478c5f004bf4898cf4af

2023-02-15T00:42:49.535Z

General Question

v1

c do while

63c6478c5f004bf4898cf4af

2023-02-15T01:02:08.432Z

General Question

v1

how do you vie stderror

63c6478c5f004bf4898cf4af

2023-02-15T01:32:38.840Z

Help Fix Code

v1

int create_user(const char *name, User **user_ptr_add) { // Check username length if (strlen(name) > MAX_NAME - 1) { return 2; } User * curr = *user_ptr_add; // Check empty list if (curr == NULL) { User *new_user = malloc(sizeof(User)); strncpy(new_user->name, name, MAX_NAME); new_user->name[MAX_NAME-1] = '\0'; * user_ptr_add = new_user; return 0; } do { // Guarantee check first element if (strcmp(curr->name, name) == 0) { return 1; } curr = curr->next; } while (curr != NULL); // Add new User User *new_user = malloc(sizeof(User)); strncpy(new_user->name, name, MAX_NAME); new_user->name[MAX_NAME-1] = '\0'; curr->next = new_user; return 0; }

accepts a string up to length MAX_NAME

63c6478c5f004bf4898cf4af

2023-02-15T02:56:28.050Z

General Question

v1

waht does const do in parameter type

63c6478c5f004bf4898cf4af

2023-02-15T05:27:33.566Z

General Question

v1

how to use time()

63c6478c5f004bf4898cf4af

2023-02-15T19:28:47.771Z

General Question

v1

how do you free a struct

63c6478c5f004bf4898cf4af

2023-02-15T19:32:27.011Z

General Question

v1

can I free a pointer but not the object it refers too if I have a copy of the pointer

63c6478c5f004bf4898cf4af

2023-02-15T19:35:51.618Z

General Question

v1

does freeing a char array free the whole array

63c6478c5f004bf4898cf4af

2023-02-21T03:35:27.079Z

General Question

v1

why does fork() not loop infinitely in a program

63c6478c5f004bf4898cf4af

2023-03-15T07:35:49.049Z

Help Write Code

v2

how do you allocate tokens from strtok into an array

63c6478c5f004bf4898cf4af

2023-03-15T16:17:28.903Z

General Question

v2

what is the syntax for a struct pointer

63c6478f5f004bf4898cf4c3

2023-01-18T00:53:11.435Z

Help Fix Code

v1

/****************************************************************************** Online C Compiler. Code, Compile, Run and Debug C program online. Write your code in this editor and press "Run" button to compile and execute it. *******************************************************************************/ #include <stdio.h> int main(){ int a[10]; int size = 10; change(a, size); } static double change(int *a, int size){ int sum; double average; for(int i = 0; i < size; i++){ a[i] = a[i]+10; sum += a[i]; } average = sum / size; return average; }

63c6478f5f004bf4898cf4c3

2023-01-18T00:54:22.190Z

Help Fix Code

v1

/****************************************************************************** Online C Compiler. Code, Compile, Run and Debug C program online. Write your code in this editor and press "Run" button to compile and execute it. *******************************************************************************/ #include <stdio.h> int main(){ int a[10]; int size = 10; change(a, size); } static double change(int *a, int size){ int sum; double average; for(int i = 0; i < size; i++){ a[i] = a[i]+10; sum += a[i]; } average = sum / size; return average; }

In the space below, write a small program that allocates an array of integers in the main function and passes that array to a function called change. (You’ll also need to pass in the length of the array – why?) The function should do two things: • Add 10 to each element of the array. • Return the average of the new contents of the array.

63c6478f5f004bf4898cf4c3

2023-01-18T01:28:32.815Z

General Question

v1

How do I use fgets on an int

63c6478f5f004bf4898cf4c3

2023-01-18T01:38:04.293Z

General Question

v1

Your task is to write a C program called phone_loop.c. This program will again read from standard input using scanf and take no command-line arguments. Similar to phone.c, this program reads a 10-character string as the first input value but then it repeatedly reads integers until standard input is closed. (Hint: Use a while loop that checks the return value of scanf to accomplish this. Check the man page for scanf to determine the return value when the input stream is closed.) After each integer the output produced is as before: if the integer is -1, the full string is printed if the integer is between 0 and 9, the individual character at that position is printed if the integer is less than -1 or greater than 9, the message "ERROR" is printed (to stdout) In each case the printing is followed by a newline character. When the program finishes running, main returns with a 0 return code if there were no errors and with a 1 return code otherwise. Note: the program must not print anything other than then the values specified.

63c6478f5f004bf4898cf4c3

2023-01-18T01:39:23.705Z

Help Write Code

v1

Your task is to write a C program called phone_loop.c. This program will again read from standard input using scanf and take no command-line arguments. Similar to phone.c, this program reads a 10-character string as the first input value but then it repeatedly reads integers until standard input is closed. (Hint: Use a while loop that checks the return value of scanf to accomplish this. Check the man page for scanf to determine the return value when the input stream is closed.) After each integer the output produced is as before: if the integer is -1, the full string is printed if the integer is between 0 and 9, the individual character at that position is printed if the integer is less than -1 or greater than 9, the message "ERROR" is printed (to stdout) In each case the printing is followed by a newline character. When the program finishes running, main returns with a 0 return code if there were no errors and with a 1 return code otherwise. Note: the program must not print anything other than then the values specified.

63c6478f5f004bf4898cf4c3

2023-01-18T02:00:04.785Z

Help Fix Code

v1

// Your task is to write a small C program called phone.c that uses scanf to read two values from standard input. #include <stdio.h> int main() { char phone[11]; printf("Type in a phone number:\n"); fgets(phone, 11, stdin); int number; printf("Type in a number:\n"); scanf("%d", &number); if (number == -1){ printf("%s\n", phone); } else if ((0 <= number)&&(number <= 9)){ printf("%d\n", phone[number]); } else { printf("ERROR"); return 1; } return 0; }

Your task is to write a small C program called phone.c that uses scanf to read two values from standard input. The first is a 10 character string and the second is an integer. The program takes no command-line arguments. (You will write this program from scratch, so remember to add, commit, and push.) If the integer is -1, the program prints the full string to stdout. If the integer i is between 0 and 9, the program prints only the corresponding character (i.e., at index i) from the string to stdout. In both of these cases the program returns 0. If the integer is less than -1 or greater than 9, the program prints the message "ERROR" to stdout and returns 1.

63c6478f5f004bf4898cf4c3

2023-01-18T02:02:04.096Z

Help Fix Code

v1

// Your task is to write a small C program called phone.c that uses scanf to read two values from standard input. #include <stdio.h> int main() { char phone[11]; printf("Type in a phone number:\n"); fgets(phone, 11, stdin); int number; printf("Type in a number:\n"); scanf("%d", &number); if (number == -1){ printf("%s\n", phone); } else if ((0 <= number)&&(number <= 9)){ printf("%d\n", phone[number]); } else { printf("ERROR"); return 1; } return 0; }

It is supposed to print the digit of the phone number corresponding to the variable number

63c6478f5f004bf4898cf4c3

2023-01-26T08:20:21.698Z

Help Fix Code

v1

int main(int argc, char** argv) { if (!(argc == 2 || argc == 3)) { fprintf(stderr, "USAGE: count_large size [permissions]\n"); return 1; } // TODO: Process command line arguments. char* perms = argv[0]; int sizeLimit = stol(argv[1]) // TODO: Call check_permissions as part of your solution to count the files to // compute and print the correct value. char permissions[10]; int links; char owner[30]; char group[30]; int size; char dateMonth[10]; int dateDay; char dateTime[20]; char file_name[10]; scanf(); int biggerFiles = 0; while (scanf("%s %d %s %s %d %s %d %s %s", permissions, links, owner, group, size, dateMonth, dateDay, dateTime, file_name) == 9) { if (size > sizeLimit) { if (check_permissions(perms, permissions)) { biggerFiles++; } } } printf("%d", biggerFiles); return 0; }

work

63c6478f5f004bf4898cf4c3

2023-01-26T08:22:06.102Z

Help Fix Code

v1

#include <stdio.h> #include <stdlib.h> // TODO: Implement a helper named check_permissions that matches the prototype below. int check_permissions(char *, char *){ }; int main(int argc, char** argv) { if (!(argc == 2 || argc == 3)) { fprintf(stderr, "USAGE: count_large size [permissions]\n"); return 1; } // TODO: Process command line arguments. char* perms = argv[0]; int sizeLimit = stol(argv[1]) // TODO: Call check_permissions as part of your solution to count the files to // compute and print the correct value. char permissions[10]; int links; char owner[30]; char group[30]; int size; char dateMonth[10]; int dateDay; char dateTime[20]; char file_name[10]; scanf(); int biggerFiles = 0; while (scanf("%s %d %s %s %d %s %d %s %s", permissions, links, owner, group, size, dateMonth, dateDay, dateTime, file_name) == 9) { if (size > sizeLimit) { if (check_permissions(perms, permissions)) { biggerFiles++; } } } printf("%d", biggerFiles); return 0; }

work

63c6478f5f004bf4898cf4c3

2023-01-26T08:32:15.548Z

Help Fix Code

v1

#include <stdio.h> #include <stdlib.h> // TODO: Implement a helper named check_permissions that matches the prototype below. int check_permissions(char *perm1, char *perm2){ for(int i = 0; i < 10; i++){ if (perm1[i] == '-'){ continue; } if (perm1[i] != perm2[i]){ return 0; } } return 1; }; int main(int argc, char** argv) { if (!(argc == 2 || argc == 3)) { fprintf(stderr, "USAGE: count_large size [permissions]\n"); return 1; } // TODO: Process command line arguments. char* perms = argv[0]; int sizeLimit = stol(argv[1]) // TODO: Call check_permissions as part of your solution to count the files to // compute and print the correct value. char permissions[10]; int links; char owner[30]; char group[30]; int size; char dateMonth[10]; int dateDay; char dateTime[20]; char file_name[10]; scanf(); int biggerFiles = 0; while (scanf("%s %d %s %s %d %s %d %s %s", &permissions, &links, &owner, &group, &size, &dateMonth, &dateDay, &dateTime, &file_name) == 9) { if (size > sizeLimit) { if (check_permissions(perms, permissions)) { biggerFiles++; } } } printf("%d", biggerFiles); return 0; }

work

63c6478f5f004bf4898cf4c3

2023-01-26T08:37:57.638Z

Help Fix Code

v1

#include <stdio.h> #include <stdlib.h> // TODO: Implement a helper named check_permissions that matches the prototype below. int check_permissions(char *perm1, char *perm2){ for(int i = 0; i < 10; i++){ if (perm1[i] == '-'){ continue; } if (perm1[i] != perm2[i]){ return 0; } } return 1; }; int main(int argc, char** argv) { if (!(argc == 2 || argc == 3)) { fprintf(stderr, "USAGE: count_large size [permissions]\n"); return 1; } // TODO: Process command line arguments. char *perms = argv[0]; int sizeLimit = atol(argv[1]); // TODO: Call check_permissions as part of your solution to count the files to // compute and print the correct value. char *permissions[10]; int links; char owner[30]; char group[30]; int size; char dateMonth[10]; int dateDay; char dateTime[20]; char file_name[10]; scanf(); int biggerFiles = 0; while (scanf("%s %d %s %s %d %s %d %s %s", *permissions, &links, &owner, &group, &size, &dateMonth, &dateDay, &dateTime, &file_name) == 9) { if (size > sizeLimit) { if (check_permissions(perms, permissions)) { biggerFiles++; } } } printf("%d", biggerFiles); return 0; }

work

63c6478f5f004bf4898cf4c3

2023-01-26T08:44:04.822Z

Help Fix Code

v1

#include <stdio.h> #include <stdlib.h> // TODO: Implement a helper named check_permissions that matches the prototype below. int check_permissions(char *perm1, char *perm2){ for(int i = 0; i < 10; i++){ if (perm1[i] == '-'){ continue; } if (perm1[i] != perm2[i]){ return 0; } } return 1; }; int main(int argc, char** argv) { if (!(argc == 2 || argc == 3)) { fprintf(stderr, "USAGE: count_large size [permissions]\n"); return 1; } // TODO: Process command line arguments. char *perms = argv[0]; int sizeLimit = atol(argv[1]); // TODO: Call check_permissions as part of your solution to count the files to // compute and print the correct value. char permissions[10]; int links; char owner[30]; char group[30]; int size; char dateMonth[10]; int dateDay; char dateTime[20]; char file_name[10]; scanf(); int biggerFiles = 0; while (scanf("%s %d %s %s %d %s %d %s %s", permissions, links, owner, group, size, dateMonth, dateDay, dateTime, file_name) == 9) { if (size > sizeLimit) { if (check_permissions(perms, permissions)) { biggerFiles++; } } } printf("%d", biggerFiles); return 0; }

work

63c6478f5f004bf4898cf4c3

2023-01-26T09:00:10.833Z

Help Fix Code

v1

#include <stdio.h> #include <stdlib.h> // TODO: Implement a helper named check_permissions that matches the prototype below. int check_permissions(char *perm1, char *perm2){ for(int i = 0; i < 10; i++){ if (perm1[i] == '-'){ continue; } if (perm1[i] != perm2[i]){ return 0; } } return 1; }; int main(int argc, char** argv) { if (!(argc == 2 || argc == 3)) { fprintf(stderr, "USAGE: count_large size [permissions]\n"); return 1; } // TODO: Process command line arguments. char perms[10]; int sizeLimit = atol(argv[1]); // TODO: Call check_permissions as part of your solution to count the files to // compute and print the correct value. if (argc == 2) { *perms = "---------"; } else { for (int i = 0; i < 9; i++) { perms[i] = argv[2][i]; } } char permissions[10]; int links; char owner[30]; char group[30]; int size; char dateMonth[10]; int dateDay; char dateTime[20]; char file_name[10]; scanf("%s %d"); int biggerFiles = 0; while (scanf("%s %*d %s %s %*d %s %*d %s %s", permissions, links, owner, group, size, dateMonth, dateDay, dateTime, file_name) == 9) { if (size > sizeLimit) { if (check_permissions(perms, permissions)) { biggerFiles++; } } } printf("%d", biggerFiles); return 0; }

work

63c6478f5f004bf4898cf4c3

2023-01-26T09:24:56.902Z

Help Fix Code

v1

#include <stdio.h> #include <stdlib.h> // TODO: Implement a helper named check_permissions that matches the prototype below. int check_permissions(char *perm1, char *perm2){ for(int i = 0; i < 10; i++){ if (perm2[i] == '-'){ continue; } if (perm1[i] != perm2[i]){ return 0; } } return 1; }; int main(int argc, char** argv) { if (!(argc == 2 || argc == 3)) { fprintf(stderr, "USAGE: count_large size [permissions]\n"); return 1; } // TODO: Process command line arguments. char *perms = "----------"; int sizeLimit = atol(argv[1]); // TODO: Call check_permissions as part of your solution to count the files to // compute and print the correct value. if (argc == 3) { for (int i = 0; i < 10; i++) { perms[i] = argv[2][i]; } } char *permissions = malloc(10 * sizeof(char)); int size; scanf("%*s %*d"); int biggerFiles = 0; while (scanf("%s %*d %*s %*s %d %*s %*d %*s %*s", permissions, &size) == 2) { if (size > sizeLimit) { if (check_permissions(permissions, perms)) { biggerFiles++; } } } printf("%d \n", biggerFiles); return 0; }

work

63c6478f5f004bf4898cf4c3

2023-01-26T17:46:54.384Z

General Question

v1

How do I use functions defined in another file?

63c6478f5f004bf4898cf4c3

2023-02-01T00:24:21.321Z

General Question

v1

When do I use -> vs .

63c6478f5f004bf4898cf4c3

2023-02-01T00:25:35.178Z

General Question

v1

When do I use -> vs . ? Provide examples

63c6478f5f004bf4898cf4c3

2023-02-08T01:27:13.157Z

Help Write Code

v1

Read in pixel array by following these instructions: * * 1. First, allocate space for m `struct pixel *` values, where m is the * height of the image. Each pointer will eventually point to one row of * pixel data. * 2. For each pointer you just allocated, initialize it to point to * heap-allocated space for an entire row of pixel data. * 3. Use the given file and pixel_array_offset to initialize the actual * struct pixel values. Assume that `sizeof(struct pixel) == 3`, which is * consistent with the bitmap file format. * NOTE: We've tested this assumption on the Teaching Lab machines, but * if you're trying to work on your own computer, we strongly recommend * checking this assumption! * 4. Return the address of the first `struct pixel *` you initialized.

63c6478f5f004bf4898cf4c3

2023-02-08T01:29:21.598Z

Help Write Code

v1

Read in pixel array by following these instructions: 1. First, allocate space for m `struct pixel *` values, where m is the height of the image. Each pointer will eventually point to one row of pixel data. 2. For each pointer you just allocated, initialize it to point to heap-allocated space for an entire row of pixel data. 3. Use the given file and pixel_array_offset to initialize the actual struct pixel values. Assume that `sizeof(struct pixel) == 3`, which is consistent with the bitmap file format. 4. Return the address of the first `struct pixel *` you initialized.

63c6478f5f004bf4898cf4c3

2023-02-25T22:04:09.792Z

General Question

v1

What are default values for variables in C

63c6478f5f004bf4898cf4c3

2023-02-25T22:08:02.997Z

General Question

v1

Does a program terminate when main returns? Justify your answer.

63c6478f5f004bf4898cf4c3

2023-02-27T22:50:22.460Z

Question from Code

v1

Does this work

int** code = {{0, 1}, {1, 2}}; int num = code[0][0]; int*** codeptr = &&num;

63c6478f5f004bf4898cf4c3

2023-02-27T22:50:50.246Z

Question from Code

v1

Why doesn't this work

int** code = {{0, 1}, {1, 2}}; int num = code[0][0]; int*** codeptr = &&num;

63c6478f5f004bf4898cf4c3

2023-02-27T22:51:38.260Z

Question from Code

v1

Why is line 3 invalid? Explain using 3-5 sentences.

int** code[2][2] = {{0, 1}, {1, 2}}; int num = code[0][0]; int*** codeptr = &&num;

63c6478f5f004bf4898cf4c3

2023-02-27T22:52:11.838Z

Question from Code

v1

Does this work? Explain in 3-5 sentences.

int** code[2][2] = {{0, 1}, {1, 2}}; int num = code[0][0]; int** codeptr = &&num;

63c6478f5f004bf4898cf4c3

2023-02-27T22:52:49.150Z

Question from Code

v1

Does this work?

int code[2][2] = {{0, 1}, {1, 2}}; int num = code[0][0]; int** codeptr = &&num;

63c6478f5f004bf4898cf4c3

2023-02-27T22:53:36.183Z

Question from Code

v1

Explain why this code does not work in 3-5 sentences.

int code[2][2] = {{0, 1}, {1, 2}}; int num = code[0][0]; int** codeptr = &&num;

63c6478f5f004bf4898cf4c3

2023-02-27T22:54:04.553Z

Question from Code

v1

Does this work?

int code[2][2] = {{0, 1}, {1, 2}}; int num = code[0][0]; int** codeptr = &&&num;

63c6478f5f004bf4898cf4c3

2023-02-27T22:54:29.353Z

General Question

v1

Can I ever have 2 or more & in a row?

63c6478f5f004bf4898cf4c3

2023-03-08T02:14:16.379Z

Help Fix Code

v1

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/types.h> #include <sys/wait.h> #define MAXLINE 256 #define SUCCESS "Password verified\n" #define INVALID "Invalid password\n" #define NO_USER "No such user\n" /* Your task is to complete checkpasswd.c, which reads a user id and password from stdin, creates a new process to run the validate program, sends it the user id and password, and prints a message to stdout reporting whether the validation is successful. Your program should use the exit status of the validate program to determine which of the three following messages to print: "Password verified" if the user id and password match. "Invalid password" if the user id exists, but the password does not match. "No such user" if the user id is not recognized The exact messages are given in the starter code as defined constants. The only case that should be handled directly in checkpasswd is the case where either the userid or password are too long. This is to prevent sending the wrong number of bytes to validate. Note that in the given password file pass.txt, the "killerwhales:swim" has a user id that is too large, and "monkeys:eatcoconuts" has a password that is too long. The examples are expected to fail, but the other cases should work correctly. You will find the following system calls useful: fork, exec, pipe, dup2, write, wait (along with WIFEXITED, WEXITSTATUS). You may not use popen or pclose in your solution. Important: execl arguments Week 7 Video 6 "Running Different Programs" demonstrates a version of execl that takes only two arguments. The signature for execl is: int execl(const char *path, const char *arg0, ... *, (char *)NULL ); In the video, the execl call only passed two arguments (execl("./hello", NULL)), but that shortcut doesn't work on teach.cs. Instead, you need to pass the middle argument (respresenting argv[0]) explicitly: execl(".hello", "hello", NULL). Let's consider two more examples. If you want to call the executable ./giant with the arguments fee fi fo, you would do it like this: execl(".giant", "giant", "fee", "fi", "fo", NULL); If you want to call ./giant with no arguments you would call it like this: execl(".giant", "giant", NULL); */ int main(void) { char user_id[MAXLINE]; char password[MAXLINE]; /* The user will type in a user name on one line followed by a password on the next. DO NOT add any prompts. The only output of this program will be one of the messages defined above. Please read the comments in validate carefully */ if (fgets(user_id, MAXLINE, stdin) == NULL) { perror("fgets"); exit(1); } if (fgets(password, MAXLINE, stdin) == NULL) { perror("fgets"); exit(1); } if (strlen(user_id) > MAXLINE || strlen(password) > MAXLINE) { exit(1); } int fd[2]; pipe(fd); pid_t pid = fork(); if (pid < 0) { perror("fork"); exit(1); } else if (pid == 0) { dup2(fd[1], STDOUT_FILENO); close(fd[0]); close(fd[1]); execl("./validate", "validate", user_id, password, NULL); perror("execl"); exit(1); } else { int status; wait(&status); int exit_status = WEXITSTATUS(status); switch (exit_status) { case 0: printf(SUCCESS); break; case 1: printf(INVALID); break; case 2: printf(INVALID); break; case 3: printf(NO_USER); break; default: fprintf(stderr, "Unknown exit status: %d\n", exit_status); exit(1); } } return 0; }

Your task is to complete checkpasswd.c, which reads a user id and password from stdin, creates a new process to run the validate program, sends it the user id and password, and prints a message to stdout reporting whether the validation is successful. Your program should use the exit status of the validate program to determine which of the three following messages to print: "Password verified" if the user id and password match. "Invalid password" if the user id exists, but the password does not match. "No such user" if the user id is not recognized The exact messages are given in the starter code as defined constants. The only case that should be handled directly in checkpasswd is the case where either the userid or password are too long. This is to prevent sending the wrong number of bytes to validate. Note that in the given password file pass.txt, the "killerwhales:swim" has a user id that is too large, and "monkeys:eatcoconuts" has a password that is too long. The examples are expected to fail, but the other cases should work correctly. You will find the following system calls useful: fork, exec, pipe, dup2, write, wait (along with WIFEXITED, WEXITSTATUS). You may not use popen or pclose in your solution. Important: execl arguments Week 7 Video 6 "Running Different Programs" demonstrates a version of execl that takes only two arguments. The signature for execl is: int execl(const char *path, const char *arg0, ... *, (char *)NULL ); In the video, the execl call only passed two arguments (execl("./hello", NULL)), but that shortcut doesn't work on teach.cs. Instead, you need to pass the middle argument (respresenting argv[0]) explicitly: execl(".hello", "hello", NULL). Let's consider two more examples. If you want to call the executable ./giant with the arguments fee fi fo, you would do it like this: execl(".giant", "giant", "fee", "fi", "fo", NULL); If you want to call ./giant with no arguments you would call it like this: execl(".giant", "giant", NULL); */ int main(void) { char user_id[MAXLINE]; char password[MAXLINE]; /* The user will type in a user name on one line followed by a password on the next. DO NOT add any prompts. The only output of this program will be one of the messages defined above. Please read the comments in validate carefully

63c6478f5f004bf4898cf4c3

2023-03-08T02:15:09.790Z

Question from Code

v1

why doesn't this work?

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/types.h> #include <sys/wait.h> #define MAXLINE 256 #define SUCCESS "Password verified\n" #define INVALID "Invalid password\n" #define NO_USER "No such user\n" /* Your task is to complete checkpasswd.c, which reads a user id and password from stdin, creates a new process to run the validate program, sends it the user id and password, and prints a message to stdout reporting whether the validation is successful. Your program should use the exit status of the validate program to determine which of the three following messages to print: "Password verified" if the user id and password match. "Invalid password" if the user id exists, but the password does not match. "No such user" if the user id is not recognized The exact messages are given in the starter code as defined constants. The only case that should be handled directly in checkpasswd is the case where either the userid or password are too long. This is to prevent sending the wrong number of bytes to validate. Note that in the given password file pass.txt, the "killerwhales:swim" has a user id that is too large, and "monkeys:eatcoconuts" has a password that is too long. The examples are expected to fail, but the other cases should work correctly. You will find the following system calls useful: fork, exec, pipe, dup2, write, wait (along with WIFEXITED, WEXITSTATUS). You may not use popen or pclose in your solution. Important: execl arguments Week 7 Video 6 "Running Different Programs" demonstrates a version of execl that takes only two arguments. The signature for execl is: int execl(const char *path, const char *arg0, ... *, (char *)NULL ); In the video, the execl call only passed two arguments (execl("./hello", NULL)), but that shortcut doesn't work on teach.cs. Instead, you need to pass the middle argument (respresenting argv[0]) explicitly: execl(".hello", "hello", NULL). Let's consider two more examples. If you want to call the executable ./giant with the arguments fee fi fo, you would do it like this: execl(".giant", "giant", "fee", "fi", "fo", NULL); If you want to call ./giant with no arguments you would call it like this: execl(".giant", "giant", NULL); */ int main(void) { char user_id[MAXLINE]; char password[MAXLINE]; /* The user will type in a user name on one line followed by a password on the next. DO NOT add any prompts. The only output of this program will be one of the messages defined above. Please read the comments in validate carefully */ if (fgets(user_id, MAXLINE, stdin) == NULL) { perror("fgets"); exit(1); } if (fgets(password, MAXLINE, stdin) == NULL) { perror("fgets"); exit(1); } if (strlen(user_id) > MAXLINE || strlen(password) > MAXLINE) { exit(1); } int fd[2]; pipe(fd); pid_t pid = fork(); if (pid < 0) { perror("fork"); exit(1); } else if (pid == 0) { dup2(fd[1], STDOUT_FILENO); close(fd[0]); close(fd[1]); execl("./validate", "validate", user_id, password, NULL); perror("execl"); exit(1); } else { int status; wait(&status); int exit_status = WEXITSTATUS(status); switch (exit_status) { case 0: printf(SUCCESS); break; case 1: printf(INVALID); break; case 2: printf(INVALID); break; case 3: printf(NO_USER); break; default: fprintf(stderr, "Unknown exit status: %d\n", exit_status); exit(1); } } return 0; }

63c6478f5f004bf4898cf4c3

2023-03-15T04:53:28.948Z

Help Fix Code

v2

work

#include<stdio.h>#include<stdlib.h>#include<string.h>#include"pmake.h"Rule*parse_file(FILE*fp){Rule*rules=makeRule();Rule*cur=rules;Action*cur_act=makeAction();Dependency*cur_dep=makeDependency();char*line=malloc(sizeof(char*)*MAXLINE);while(fgets(line,sizeof(MAXLINE),fp)){if(is_comment_or_empty(line)){continue;}char**args=parseLine(line);if(line[0]=='\t'){Action*cur_act=cur->actions;while(cur_act->next_act!=NULL){cur_act=cur_act->next_act;}cur_act->next_act=malloc(sizeof(Action));cur_act->next_act=makeAction();cur_act->next_act->args=args;}else{Rule*cur=rules;while(cur->next_rule!=NULL){cur=cur->next_rule;}for(inti=0;i<sizeof(args);i++){Rule*searchRule=rules;cur_dep=cur->dependencies;while(searchRule->next_rule!=NULL){if(strcmp(searchRule->target,args[i])==0){if(i==0){cur=searchRule;break;}elseif(i>=2){while(cur_dep->next_dep!=NULL){cur_dep=cur_dep->next_dep;}cur_dep->rule=searchRule;cur_dep->next_dep=makeDependency();cur_dep=cur_dep->next_dep;break;}}searchRule=searchRule->next_rule;}if(searchRule->next_rule==NULL){if(i==0){Rule*oldcur=cur;cur->target=args[0];cur->dependencies=makeDependency();cur_dep=cur->dependencies;cur->actions=makeAction();for(intj=2;j<sizeof(args);j++){cur_dep->rule=makeRule();cur_dep->rule->target=args[j];cur_dep->next_dep=makeDependency();cur_dep=cur_dep->next_dep;cur->next_rule=cur_dep->rule;cur=cur->next_rule;}cur->next_rule=makeRule();cur=oldcur;break;}elseif(i>=2){Rule*newcur=rules;while(newcur->next_rule!=NULL){newcur=newcur->next_rule;}Rule*new_rule=makeRule();new_rule->target=args[i];newcur->next_rule=new_rule;cur_dep->rule=new_rule;cur_dep->next_dep=makeDependency();cur_dep=cur_dep->next_dep;break;}}}}}returnrules;}

63c6478f5f004bf4898cf4c3

2023-03-15T04:56:43.280Z

Help Fix Code

v2

work

Rule *parse_file(FILE *fp) { Rule *rules = makeRule(); Rule *cur = rules; Action *cur_act = makeAction(); Dependency *cur_dep = makeDependency(); char *line = malloc(sizeof(char*) * MAXLINE); while (fgets(line, sizeof(MAXLINE), fp)) { if (is_comment_or_empty(line)) { continue; } char** args = parseLine(line); if (line[0] == '\t') { Action *cur_act = cur->actions; while (cur_act->next_act != NULL) { cur_act = cur_act->next_act; } cur_act->next_act = malloc(sizeof(Action)); cur_act->next_act = makeAction(); cur_act->next_act->args = args; } else { Rule *cur = rules; while (cur->next_rule != NULL) { cur = cur->next_rule; } for (int i = 0; i < sizeof(args); i++) { Rule *searchRule = rules; cur_dep = cur->dependencies; while (searchRule->next_rule != NULL) { if (strcmp(searchRule->target, args[i]) == 0) { if (i == 0){ cur = searchRule; break; } else if (i >= 2) { while (cur_dep->next_dep != NULL) { cur_dep = cur_dep->next_dep; } cur_dep->rule = searchRule; cur_dep->next_dep = makeDependency(); cur_dep = cur_dep->next_dep; break; } } searchRule = searchRule->next_rule; } if (searchRule->next_rule == NULL) { if (i == 0){ Rule *oldcur = cur; cur->target = args[0]; cur->dependencies = makeDependency(); cur_dep = cur->dependencies; cur->actions = makeAction(); for (int j = 2; j < sizeof(args); j++) { cur_dep->rule = makeRule(); cur_dep->rule->target = args[j]; cur_dep->next_dep = makeDependency(); cur_dep = cur_dep->next_dep; cur->next_rule = cur_dep->rule; cur = cur->next_rule; } cur->next_rule = makeRule(); cur = oldcur; break; } else if (i >= 2) { Rule *newcur = rules; while (newcur->next_rule != NULL) { newcur = newcur->next_rule; } Rule *new_rule = makeRule(); new_rule->target = args[i]; newcur->next_rule = new_rule; cur_dep->rule = new_rule; cur_dep->next_dep = makeDependency(); cur_dep = cur_dep->next_dep; break; } } } } } return rules; }

63c6478f5f004bf4898cf4c3

2023-03-15T04:58:16.755Z

Explain Code

v2

Rule *parse_file(FILE *fp) { Rule *rules = makeRule(); Rule *cur = rules; Action *cur_act = makeAction(); Dependency *cur_dep = makeDependency(); char *line = malloc(sizeof(char *) * MAXLINE); while (fgets(line, sizeof(MAXLINE), fp)) { if (is_comment_or_empty(line)) { continue; } char **args = parseLine(line); if (line[0] == '\t') { Action *cur_act = cur->actions; while (cur_act->next_act != NULL) { cur_act = cur_act->next_act; } cur_act->next_act = malloc(sizeof(Action)); cur_act->next_act = makeAction(); cur_act->next_act->args = args; } else { Rule *cur = rules; while (cur->next_rule != NULL) { cur = cur->next_rule; } for (int i = 0; i < sizeof(args); i++) { Rule *searchRule = rules; cur_dep = cur->dependencies; while (searchRule->next_rule != NULL) { if (strcmp(searchRule->target, args[i]) == 0) { if (i == 0) { cur = searchRule; break; } else if (i >= 2) { while (cur_dep->next_dep != NULL) { cur_dep = cur_dep->next_dep; } cur_dep->rule = searchRule; cur_dep->next_dep = makeDependency(); cur_dep = cur_dep->next_dep; break; } } searchRule = searchRule->next_rule; } if (searchRule->next_rule == NULL) { if (i == 0) { Rule *oldcur = cur; cur->target = args[0]; cur->dependencies = makeDependency(); cur_dep = cur->dependencies; cur->actions = makeAction(); for (int j = 2; j < sizeof(args); j++) { cur_dep->rule = makeRule(); cur_dep->rule->target = args[j]; cur_dep->next_dep = makeDependency(); cur_dep = cur_dep->next_dep; cur->next_rule = cur_dep->rule; cur = cur->next_rule; } cur->next_rule = makeRule(); cur = oldcur; break; } else if (i >= 2) { Rule *newcur = rules; while (newcur->next_rule != NULL) { newcur = newcur->next_rule; } Rule *new_rule = makeRule(); new_rule->target = args[i]; newcur->next_rule = new_rule; cur_dep->rule = new_rule; cur_dep->next_dep = makeDependency(); cur_dep = cur_dep->next_dep; break; } } } } } return rules; }

63c6478f5f004bf4898cf4c3

2023-03-15T05:04:03.404Z

Help Fix Code

v2

char** parseLine(char* line) { // Parse the line char** args = malloc(sizeof(char**)); char* arg = strtok(line, " "); // Parse the arguments and add them to args while (arg != NULL) { args = realloc(args, sizeof(char**) * (sizeof(args) + 1)); args[sizeof(args)] = arg; arg = strtok(NULL, " "); } return args; }

63c6478f5f004bf4898cf4c3

2023-03-15T05:05:22.246Z

Help Fix Code

v2

This should read the characters from line and generate an array of strings, one per argument

char** parseLine(char* line) { // Parse the line char** args = malloc(sizeof(char**)); char* arg = strtok(line, " "); // Parse the arguments and add them to args while (arg != NULL) { args = realloc(args, sizeof(char**) * (sizeof(args) + 1)); args[sizeof(args)] = arg; arg = strtok(NULL, " "); } return args; }

63c6478f5f004bf4898cf4c3

2023-03-15T05:10:07.536Z

Help Fix Code

v2

Split the strings in line into an array using spaces and return a list of strings

char** parseLine(char* line) { // Parse the line char** args = malloc(sizeof(char*)); char* arg = strtok(line, " "); // Parse the arguments and add them to args int i = 0; while (arg != NULL) { args[i] = malloc(strlen(arg) + 1); strcpy(args[i], arg); i++; args = realloc(args, sizeof(char*) * (i + 1)); arg = strtok(NULL, " "); } args[i] = NULL; return args; }

63c6478f5f004bf4898cf4c3

2023-03-15T06:25:48.812Z

Help Fix Code

v2

Does this work?

cur_dep->rule = makeRule(); cur->next_rule = cur_dep->rule; cur = cur->next_rule;

63c6478f5f004bf4898cf4c3

2023-04-05T05:44:17.297Z

Help Fix Code

v2

compile

char* list_users(const User *curr) { const User *og_user = curr; char *user_list = NULL; int size = 11; while (curr != NULL) { size += strlen(curr->name) + 3; curr = curr->next; } user_list = malloc(sizeof(char)*size); if (user_list == NULL) { perror("malloc"); exit(1); } else { strcat(user_list, "User List\r\n"); curr = og_user; while (curr != NULL) { strcat(user_list, "\t"); strcat(user_list, curr->name); strcat(user_list, "\r\n"); curr = curr->next; } } return user_list; }

63c6478f5f004bf4898cf4c3

2023-04-25T20:20:54.854Z

General Question

v2

how do i do stuff for sockets

63c647905f004bf4898cf4cd

2023-02-08T02:13:13.970Z

General Question

v1

When I call gcc on a c file in the terminal, what file type is the output?

63c647945f004bf4898cf4e6

2023-01-17T18:13:54.207Z

General Question

v1

what is a pointer variable?