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stringlengths 24
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stringclasses 5
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stringlengths 1
1.24k
⌀ | input_code
stringlengths 2
18.5k
⌀ | input_intention
stringlengths 1
2.48k
⌀ | input_task_description
stringlengths 18
3.32k
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|---|---|---|---|---|---|---|---|
63c648055f004bf4898cf8bf | 2023-01-23T17:14:02.648Z | General Question | v1 | how do i check that a given integer is 9 digits with math operations? | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-23T17:14:54.890Z | General Question | v1 | how do i use % 10 and / 10 to calculate the digits? | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-23T18:09:34.323Z | General Question | v1 | how do i populate an array with a given integer? | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-23T18:11:11.614Z | General Question | v1 | how do i separate an integer 123 to array [1,2,3] | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-23T18:15:13.754Z | General Question | v1 | how to check how many digits an integer has | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-23T18:21:32.385Z | General Question | v1 | if i % 2 == 1 | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-23T18:24:48.819Z | Question from Code | v1 | what does this print | printf(2 / 10); | null | null |
63c648055f004bf4898cf8bf | 2023-01-23T18:25:28.308Z | Question from Code | v1 | waht does this print | int i = 2/10;
printf("%d", i); | null | null |
63c648055f004bf4898cf8bf | 2023-01-23T18:25:47.965Z | Question from Code | v1 | what does this print | int i = 12/10;
printf("%d", i); | null | null |
63c648055f004bf4898cf8bf | 2023-01-23T18:31:46.467Z | General Question | v1 | how to check if integer is divisible by 10 | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T20:20:28.342Z | General Question | v1 | how do i get the length of all argv | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T20:22:54.782Z | Explain Code | v1 | null | int c = 6/2;
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T20:23:13.959Z | Question from Code | v1 | what does this print? | int c = 6/2;
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T20:43:45.840Z | General Question | v1 | how do i pass in an array of argv elements | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T20:51:19.802Z | General Question | v1 | how do i get all argv and pass it in an array to helper method | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:12:35.686Z | General Question | v1 | how do i build an array from argv inputs? | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:15:38.019Z | General Question | v1 | how do you loop through the argv elements | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:26:26.786Z | Question from Code | v1 | what does this print | int c = 3/2;
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:40:20.234Z | General Question | v1 | how do you do ceiling? | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:40:48.446Z | General Question | v1 | how do you do ceiling without importing libraries?????? | null | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:45:35.946Z | Question from Code | v1 | how do i make this return 2 | int c = 3/2;
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:46:07.804Z | Question from Code | v1 | what does this return | int c = 3/2.0;
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:47:22.857Z | Question from Code | v1 | what does this return? | int c;
c = (int) 3/2;
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:51:15.465Z | Question from Code | v1 | what doe sthis return | int c = (3 / 2) + ((3 % 2) != 0);
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:51:36.523Z | Question from Code | v1 | what does this return? | int c = (4 / 2) + ((4 % 2) != 0);
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:53:02.648Z | Question from Code | v1 | rwjat does this reutn | int c = int((4 / 2) + ((4 % 2) != 0));
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-24T21:53:29.300Z | Question from Code | v1 | waht does this reutnr? | int c = (4 / 2) + ((4 % 2) != 0);
printf("%d", c); | null | null |
63c648055f004bf4898cf8bf | 2023-01-26T02:40:57.190Z | Question from Code | v1 | what does this print? | int c;
printf("%d", c+1); | null | null |
63c648055f004bf4898cf8bf | 2023-01-26T02:41:21.683Z | Question from Code | v1 | what is the value of c+1? | int c;
printf("%d", c+1); | null | null |
63c648055f004bf4898cf8bf | 2023-01-26T02:42:05.633Z | Question from Code | v1 | what is c=+1? | int c;
printf("%d", c=+1); | null | null |
63c648055f004bf4898cf8bf | 2023-01-26T02:43:38.469Z | Question from Code | v1 | what is the value of c? | int c;
c+=1; | null | null |
63c648055f004bf4898cf8bf | 2023-01-26T02:44:26.170Z | Question from Code | v1 | what is the value of c? | int c=0;
c+=1; | null | null |
63c648055f004bf4898cf8bf | 2023-02-01T00:21:59.604Z | Help Fix Code | v1 | null | int main(int argc, char **argv) {
if (argc != 3) {
printf("Invalid\n");
}
else {
if (s1 == s2) {
printf("Same\n");
}
else {
printf("Different\n");
}
}
return 0;
} | print Same if the 2 arguments are the same. | null |
63c648055f004bf4898cf8bf | 2023-02-01T00:23:29.435Z | Help Fix Code | v1 | null | int main(int argc, char **argv) {
if (argc != 3) {
printf("Invalid\n");
}
else {
if (argv[1] == argv[2]) {
printf("Same\n");
}
else {
printf("Different\n");
}
}
return 0;
} | compare argv[1] to argv[2] without using strcmp | null |
63c648055f004bf4898cf8bf | 2023-02-01T02:38:37.983Z | Help Fix Code | v1 | null | int main(int argc, char **argv) {
if (argc != 3) {
fprintf(stderr, "Usage: greeting message name\n");
return 1;
}
char greeting[20];
char *name = argv[2];
// Your code goes here
char *hi = argv[1];
strncpy(greeting, hi, sizeof(greeting) - 1);
strncat(greeting, ' ', sizeof(greeting) - strlen(greeting) - 1);
strncat(greeting, name, sizeof(greeting) - strlen(greeting) - 1);
printf("%s\n", greeting);
return 0;
} | how do i concatenate a space after copying hi to greeting? | null |
63c648055f004bf4898cf8bf | 2023-02-01T02:41:41.619Z | Help Fix Code | v1 | null | int main(int argc, char **argv) {
if (argc != 3) {
fprintf(stderr, "Usage: greeting message name\n");
return 1;
}
char greeting[20];
char *name = argv[2];
// Your code goes here
char *hi = argv[1];
strncpy(greeting, hi, sizeof(greeting) - 1);
strncat(greeting, " ", sizeof(greeting) - strlen(greeting) - 1);
strncat(greeting, name, sizeof(greeting) - strlen(greeting) - 1);
printf("%s\n", greeting);
return 0;
}
| how do i make sure greeting is properly null terminated after strncpy call? | null |
63c648055f004bf4898cf8bf | 2023-02-01T03:21:03.009Z | General Question | v1 | how do you remove the last few question marks from a given string? | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-01T03:32:37.341Z | Help Fix Code | v1 | null | int strip_q_marks(char *s) {
char *p;
p = strchr(s, '\0');
if (s[p-s-1] != "?") {
return 0;
}
else {
printf("%d\n", p-s-1);
}
} | if p-s-1 != "?" return 0, else return the value | null |
63c648055f004bf4898cf8bf | 2023-02-01T03:48:10.306Z | Help Fix Code | v1 | null | int truncate(char *s, int n) {
int p = strlen(s);
if (p <= n) {
return 0;
}
else {
strncpy(s, s, n);
int q = strlen(s);
return p - q;
}
} | change s to be s of length at most n | null |
63c648055f004bf4898cf8bf | 2023-02-01T03:51:53.085Z | Help Fix Code | v1 | null | int truncate(char *s, int n) {
int p = strlen(s);
if (p <= n) {
return 0;
}
else {
strncpy(s, s, n);
s[n+1] = '\0';
int q = strlen(s);
return p - q;
}
} | modify s to a string with max character of n in line 7. | null |
63c648055f004bf4898cf8bf | 2023-02-07T23:55:21.603Z | General Question | v1 | Does fseek in c take in bits or bytes for offset? | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-08T00:00:36.056Z | General Question | v1 | does fread take in bytes as element size? | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-08T00:06:32.721Z | General Question | v1 | When you fseek with pointer by 0 distance with respect to end of file what value do you print? | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-08T00:07:43.882Z | Question from Code | v1 | how many characters does this have? | "Someone over there is calling you. we are going for work. take care of yourself." | null | null |
63c648055f004bf4898cf8bf | 2023-02-08T02:10:16.478Z | Help Fix Code | v1 | null | void read_bitmap_metadata(FILE *image, int *pixel_array_offset, int *width, int *height) {
int pointer;
pointer = fseek(image, 10, SEEK_SET);
pixel_array_offset = fread(&pointer, 4, 1, image);
pointer = fseek(image, 18, SEEK_SET);
width = fread(&pointer, 4, 1, image);
pointer = fseek(image, 22, SEEK_SET);
height = fread(&pointer, 4, 1, image);
} | Why do i get this error?
assignment to ‘int *’ from ‘size_t’ {aka ‘long unsigned int’} makes pointer from integer without a cast [-Wint-conversion]
13 | pixel_array_offset = fread(&pointer, 4, 1, image); | null |
63c648055f004bf4898cf8bf | 2023-02-08T02:14:49.296Z | Help Fix Code | v1 | null | struct pixel **read_pixel_array(FILE *image, int pixel_array_offset, int width, int height) {
struct pixel **m = malloc(sizeof(struct pixel*) * height);
for (int i = 0; i < height; i++) {
m[i] = malloc(sizeof(struct pixel) * width);
}
fseek(image, pixel_array_offset, SEEK_SET);
fread(image, sizeof(width), height, m);
// for (int j = 0; j < height; j++) {
// for (int k = 0; k < width; k++) {
// m[j][k] = image[pixel_array_offset];
// }
// }
return m;
} | Why is it not reading on line 8? | null |
63c648055f004bf4898cf8bf | 2023-02-08T02:16:35.429Z | Help Fix Code | v1 | null | struct pixel **read_pixel_array(FILE *image, int pixel_array_offset, int width, int height) {
struct pixel **m = malloc(sizeof(struct pixel*) * height);
for (int i = 0; i < height; i++) {
m[i] = malloc(sizeof(struct pixel) * width);
}
fseek(image, pixel_array_offset, SEEK_SET);
fread(image, sizeof(width), height, m);
// for (int j = 0; j < height; j++) {
// for (int k = 0; k < width; k++) {
// m[j][k] = image[pixel_array_offset];
// }
// }
return m;
} | 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. | null |
63c648055f004bf4898cf8bf | 2023-02-08T02:30:02.875Z | Help Fix Code | v1 | null | for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++) {
free(pixels[i][j]);
}
}
free(pixels); | why does this not free the memory i used for pixels? | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:12:22.825Z | Question from Code | v1 | why would you pass in User **user_ptr_add here
| /*
* Create a new user with the given name. Insert it at the tail of the list
* of users whose head is pointed to by *user_ptr_add.
*
* Return:
* - 0 if successful
* - 1 if a user by this name already exists in this list
* - 2 if the given name cannot fit in the 'name' array
* (don't forget about the null terminator)
*/
int create_user(const char *name, User **user_ptr_add) {
User *curr = user_ptr_add;
while (curr->next != NULL) {
curr = curr->next
}
return -1;
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:13:05.745Z | Question from Code | v1 | why is user_ptr_add passed in as a pointer to a pointer | int create_user(const char *name, User **user_ptr_add) {
User *curr = user_ptr_add;
while (curr->next != NULL) {
curr = curr->next
}
return -1;
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:13:53.332Z | Help Fix Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
User *curr = user_ptr_add;
while (curr->next != NULL) {
curr = curr->next
}
return -1;
} | traverse through the Users until it reaches the end | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:18:06.204Z | Help Fix Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, "name");
User *curr = *user_ptr_add;
while (curr->next != NULL) {
curr = curr->next;
}
return -1;
}
| how do i check if the given name cannot fit in the 'name' array (don't forget about the null terminator) | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:18:33.413Z | Help Fix Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, name);
User *curr = *user_ptr_add;
while (curr->next != NULL) {
curr = curr->next;
}
return -1;
}
| how do i check if the given name cannot fit in the 'name' array (don't forget about the null terminator) | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:19:17.142Z | Help Fix Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, name);
User *curr = *user_ptr_add;
while (curr->next != NULL) {
curr = curr->next;
}
return -1;
}
| how do i check that the given name cannot fit in the 'name' array by adding a check for the length of the name? | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:25:16.927Z | Explain Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
if (strlen(name) > MAX_NAME - 1) {
return 2;
}
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, name);
new_user->next = NULL;
User *curr = *user_ptr_add;
while (curr->next != NULL) {
if (curr->name == name) {
return 1;
}
curr = curr->next;
}
curr->next = new_user;
return 0;
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:30:33.398Z | Question from Code | v1 | why am i getting a segmentation fault with this code | int create_user(const char *name, User **user_ptr_add) {
if (strlen(name) > MAX_NAME - 1) {
return 2;
}
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, name);
new_user->next = NULL;
User *curr = *user_ptr_add;
while (curr->next != NULL) {
if (curr->name == name) {
return 1;
}
curr = curr->next;
}
curr->next = new_user;
return 0;
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:32:30.054Z | Question from Code | v1 | how do i allocate space for new_user->name | int create_user(const char *name, User **user_ptr_add) {
if (strlen(name) > MAX_NAME - 1) {
return 2;
}
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, name);
new_user->next = NULL;
User *curr = *user_ptr_add;
while (curr->next != NULL) {
if (curr->name == name) {
return 1;
}
curr = curr->next;
}
curr->next = new_user;
return 0;
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:35:54.118Z | Help Fix Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
if (strlen(name) > MAX_NAME - 1) {
return 2;
}
User *new_user = malloc(sizeof(User));
*new_user->name = malloc(sizeof(char) * MAX_NAME);
strcpy(new_user->name, name);
new_user->next = NULL;
User *curr = *user_ptr_add;
while (curr->next != NULL) {
if (curr->name == name) {
return 1;
}
curr = curr->next;
}
curr->next = new_user;
return 0;
}
| why am i getting a segmentation fault | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:37:55.584Z | Help Fix Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
if (strlen(name) > MAX_NAME - 1) {
return 2;
}
User *new_user = malloc(sizeof(User));
new_user->name = malloc(sizeof(char) * MAX_NAME);
strcpy(new_user->name, name);
new_user->next = NULL;
User *curr = *user_ptr_add;
while (*curr->next != NULL) {
if *curr->name == name) {
return 1;
}
*curr = curr->next;
}
*curr->next = new_user;
return 0;
}
| not get segmentation fault | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:40:08.325Z | Question from Code | v1 | how do i not get a segmentation fault with this... | int create_user(const char *name, User **user_ptr_add) {
if (strlen(name) > MAX_NAME - 1) {
return 2;
}
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, name);
new_user->next = NULL;
User *curr = *user_ptr_add;
while (curr->next != NULL) {
if (curr->name == name) {
return 1;
}
curr = curr->next;
}
curr->next = new_user;
return 0;
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:44:03.595Z | Help Fix Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
if (strlen(name) > MAX_NAME - 1) {
return 2;
}
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, name);
new_user->next = NULL;
User *curr = *user_ptr_add;
if (curr == NULL) {
curr = new_user;
} else {
while (curr->next != NULL) {
if (curr->name == name) {
return 1;
}
curr = curr->next;
}
curr->next = new_user;
}
return 0;
} | /*
* Create a new user with the given name. Insert it at the tail of the list
* of users whose head is pointed to by *user_ptr_add.
*
* Return:
* - 0 if successful
* - 1 if a user by this name already exists in this list
* - 2 if the given name cannot fit in the 'name' array
* (don't forget about the null terminator)
*/ | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:47:16.214Z | Help Fix Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
if (strlen(name) > MAX_NAME - 1) {
return 2;
}
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, name);
new_user->next = NULL;
User *curr = *user_ptr_add;
if (curr == NULL) {
*user_ptr_add = new_user;
} else {
while (curr->next != NULL) {
if (strcmp(curr->name, name) != 0) {
return 1;
} else {
curr = curr->next;
}}
curr->next = new_user;
}
return 0;
} | Create a new user with the given name. Insert it at the tail of the list * of users whose head is pointed to by *user_ptr_add. * * Return: * - 0 if successful * - 1 if a user by this name already exists in this list * - 2 if the given name cannot fit in the 'name' array * (don't forget about the null terminator) | null |
63c648055f004bf4898cf8bf | 2023-02-12T01:50:29.722Z | General Question | v1 | what happens when you make a struct with members and don't initialize all its contents? | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T03:08:13.233Z | General Question | v1 | how do you do "pass" in c | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T03:16:08.637Z | Question from Code | v1 | is this the right way to return 1 if the file does not exist or cannot be opened? |
int update_pic(User *user, const char *filename) {
// file cannot be opened
FILE *file = fopen(filename, "rb");
if (file == NULL) {
return 2;
}
return -1;
}
| null | null |
63c648055f004bf4898cf8bf | 2023-02-12T03:16:40.271Z | Question from Code | v1 | does this return 2 if the file does not exist or cannot be opened? |
int update_pic(User *user, const char *filename) {
// file cannot be opened
FILE *file = fopen(filename, "rb");
if (file == NULL) {
return 2;
}
return -1;
}
| null | null |
63c648055f004bf4898cf8bf | 2023-02-12T03:27:38.117Z | Help Fix Code | v1 | null | int create_user(const char *name, User **user_ptr_add) {
// check if name cannot fit array
if (strlen(name) > MAX_NAME - 1) {
return 2;
}
// allocate space for new user and make new user
User *new_user = malloc(sizeof(User));
strcpy(new_user->name, name);
new_user->next = NULL;
User *curr = *user_ptr_add;
// if there are no users, make new_user the first of linked list
if (curr == NULL) {
*user_ptr_add = new_user;
}
// else, traverse until the end of the list and add new_user to the end
else {
while (curr->next != NULL) {
if (strcmp(curr->name, name) == 0) {
return 1;
} else {
curr = curr->next;
}
} curr->next = new_user;
}
return 0;
}
| return 1 if a user by this name already exists in this list | null |
63c648055f004bf4898cf8bf | 2023-02-12T04:17:32.693Z | Help Fix Code | v1 | null | int make_friends(const char *name1, const char *name2, User *head) {
User *curr1 = head;
User *curr2 = head;
User *store1 = NULL;
User *store2 = NULL;
while (curr1 != NULL) {
if (strcmp(curr1->name, name1) == 0) {
store1 = curr1;
}
else {
curr1 = curr1->next;
}
}
while (curr2 != NULL) {
if (strcmp(curr2->name, name2) == 0) {
store2 = curr2;
}
else {
curr2 = curr2->next;
}
}
if (store1 == NULL || store2 == NULL) {
return 4;
}
else if (store1 == store2) {
return 3;
}
else if (store1->friends[10] != NULL || store2->friends[10] != NULL) {
return 2;
}
else {
}
// * - 0 on success.
// * - 1 if the two users are already friends.
return 0;
} | how do i return 1 if the two users are already friends? | null |
63c648055f004bf4898cf8bf | 2023-02-12T04:35:27.738Z | Help Fix Code | v1 | null | int make_friends(const char *name1, const char *name2, User *head) {
User *curr1 = head;
User *curr2 = head;
User *store1 = NULL;
User *store2 = NULL;
while (curr1 != NULL) {
if (strcmp(curr1->name, name1) == 0) {
store1 = curr1;
}
else {
curr1 = curr1->next;
}
}
while (curr2 != NULL) {
if (strcmp(curr2->name, name2) == 0) {
store2 = curr2;
}
else {
curr2 = curr2->next;
}
}
if (store1 == NULL || store2 == NULL) {
return 4;
}
else if (store1 == store2) {
return 3;
}
else if (store1->friends[MAX_FRIENDS] != NULL || store2->friends[MAX_FRIENDS] != NULL) {
return 2;
}
else {
for (int i = 0; i < MAX_FRIENDS; i++) {
if (store1->friends[i] == store2) {
return 1;
}
else if (store1->friends[i] != NULL) {
store1 = store1->next;
}
else {
store1->friends[i] = store2;
for (int j = 0; j < MAX_FRIENDS; j++) {
if (store2->friends[j] != NULL) {
store2 = store2->next;
}
else {
store2->friends[j] = store1;
}
}
}
}
}
return 0;
} | /*
* Make two users friends with each other. This is symmetric - a pointer to
* each user must be stored in the 'friends' array of the other.
*
* New friends must be added in the first empty spot in the 'friends' array.
*
* Return:
* - 0 on success.
* - 1 if the two users are already friends.
* - 2 if the users are not already friends, but at least one already has
* MAX_FRIENDS friends.
* - 3 if the same user is passed in twice.
* - 4 if at least one user does not exist.
*
* Do not modify either user if the result is a failure.
* NOTE: If multiple errors apply, return the *largest* error code that applies.
*/ | null |
63c648055f004bf4898cf8bf | 2023-02-12T04:37:28.617Z | Explain Code | v1 | null | int make_friends(const char *name1, const char *name2, User *head) {
User *curr1 = head;
User *curr2 = head;
User *store1 = NULL;
User *store2 = NULL;
while (curr1 != NULL) {
if (strcmp(curr1->name, name1) == 0) {
store1 = curr1;
}
else {
curr1 = curr1->next;
}
}
while (curr2 != NULL) {
if (strcmp(curr2->name, name2) == 0) {
store2 = curr2;
}
else {
curr2 = curr2->next;
}
}
if (store1 == NULL || store2 == NULL) {
return 4;
}
else if (store1 == store2) {
return 3;
}
else if (store1->friends[MAX_FRIENDS] != NULL || store2->friends[MAX_FRIENDS] != NULL) {
return 2;
}
else {
for (int i = 0; i < MAX_FRIENDS; i++) {
if (store1->friends[i] == store2) {
return 1;
}
else if (store1->friends[i] != NULL) {
store1 = store1->next;
}
else {
store1->friends[i] = store2;
for (int j = 0; j < MAX_FRIENDS; j++) {
if (store2->friends[j] != NULL) {
store2 = store2->next;
}
else {
store2->friends[j] = store1;
}
}
}
}
}
return 0;
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T04:38:34.825Z | Help Fix Code | v1 | null | int make_friends(const char *name1, const char *name2, User *head) {
User *curr1 = head;
User *curr2 = head;
User *store1 = NULL;
User *store2 = NULL;
while (curr1 != NULL) {
if (strcmp(curr1->name, name1) == 0) {
store1 = curr1;
}
else {
curr1 = curr1->next;
}
}
while (curr2 != NULL) {
if (strcmp(curr2->name, name2) == 0) {
store2 = curr2;
}
else {
curr2 = curr2->next;
}
}
if (store1 == NULL || store2 == NULL) {
return 4;
}
else if (store1 == store2) {
return 3;
}
else if (store1->friends[MAX_FRIENDS-1] != NULL || store2->friends[MAX_FRIENDS-1] != NULL) {
return 2;
}
else {
for (int i = 0; i < MAX_FRIENDS; i++) {
if (store1->friends[i] == store2) {
return 1;
}
else if (store1->friends[i] != NULL) {
store1 = store1->next;
}
else {
store1->friends[i] = store2;
for (int j = 0; j < MAX_FRIENDS; j++) {
if (store2->friends[j] != NULL) {
store2 = store2->next;
}
else {
store2->friends[j] = store1;
}
}
}
}
}
return 0;
} | /*
* Make two users friends with each other. This is symmetric - a pointer to
* each user must be stored in the 'friends' array of the other.
*
* New friends must be added in the first empty spot in the 'friends' array.
*
* Return:
* - 0 on success.
* - 1 if the two users are already friends.
* - 2 if the users are not already friends, but at least one already has
* MAX_FRIENDS friends.
* - 3 if the same user is passed in twice.
* - 4 if at least one user does not exist.
*
* Do not modify either user if the result is a failure.
* NOTE: If multiple errors apply, return the *largest* error code that applies.
*/ | null |
63c648055f004bf4898cf8bf | 2023-02-12T04:48:20.592Z | General Question | v1 | how do you write file to standard output? | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T05:36:13.203Z | Help Fix Code | v1 | null | int make_friends(const char *name1, const char *name2, User *head) {
User *curr1 = head;
User *curr2 = head;
while (curr1 != NULL && strcmp(curr1->name, name1) != 0) {
curr1 = curr1->next;
}
while (curr2 != NULL && strcmp(curr2->name, name2) != 0) {
curr2 = curr2->next;
}
if (curr1 == NULL || curr2 == NULL) {
return 4;
}
else if (curr1 == curr2) {
return 3;
}
else if (curr1->friends[MAX_FRIENDS-1] != NULL || curr2->friends[MAX_FRIENDS-1] != NULL) {
return 2;
}
else {
for (int i = 0; i < MAX_FRIENDS; i++) {
if (curr1->friends[i] == curr2) {
return 1;
}
else if (curr1->friends[i] == NULL) {
curr1->friends[i] = curr2;
for (int j = 0; j < MAX_FRIENDS; j++) {
if (curr2->friends[j] == NULL) {
curr2->friends[j] = curr1;
}
else {
curr2 = curr2->next;
}
}
}
else {
curr1 = curr1->next;
}
}
}
return 0;
} | make 2 valid users friends if they are not already friends | null |
63c648055f004bf4898cf8bf | 2023-02-12T08:36:51.126Z | General Question | v1 | gives a nice human-readable representation of the date and time of each post in the format, "Friday Jan 27 23:01:00 2023". Use the time and ctime functions to find the current time and convert a time value to a string, respectively. | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T08:39:38.692Z | Question from Code | v1 | how do i use ctime to convert this into a string? | time_t current_time = time(NULL); | null | null |
63c648055f004bf4898cf8bf | 2023-02-12T08:49:34.825Z | Help Fix Code | v1 | null | int make_post(const User *author, User *target, char *contents) {
if (author == NULL || target == NULL) {
return 2;
}
for (int i = 0; i < MAX_FRIENDS; i++) {
if (author->friends[i] == target) {
Post *new_post = malloc(sizeof(Post));
strncpy(new_post->author, author->name, MAX_NAME);
new_post->author[MAX_NAME-1] = '\0';
strcpy(new_post->contents, contents);
// time function to get the current time and store it in a variable
// Then, use the ctime function to convert the time value to a string.
time_t current_time = time(NULL);
// char* time_string = ctime(¤t_time);
new_post->date = current_time;
new_post->next = target->first_post;
target->first_post = new_post;
return 0;
}
}
return 1;
} | 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 | null |
63c648055f004bf4898cf8bf | 2023-02-12T08:51:16.212Z | Help Fix Code | v1 | null | int make_post(const User *author, User *target, char *contents) {
if (author == NULL || target == NULL) {
return 2;
}
for (int i = 0; i < MAX_FRIENDS; i++) {
if (author->friends[i] == target) {
Post *new_post = malloc(sizeof(Post));
strncpy(new_post->author, author->name, MAX_NAME);
new_post->author[MAX_NAME-1] = '\0';
new_post->contents = contents;
// time function to get the current time and store it in a variable
// Then, use the ctime function to convert the time value to a string.
time_t current_time = time(NULL);
// char* time_string = ctime(¤t_time);
new_post->date = current_time;
new_post->next = target->first_post;
target->first_post = new_post;
return 0;
}
}
return 1;
} | error: assignment to ‘time_t *’ {aka ‘long int *’} from ‘time_t’ {aka ‘long int’} makes pointer from integer without a cast [-Werror=int-
conversion]
230 | new_post->date = current_time; | null |
63c648055f004bf4898cf8bf | 2023-02-13T06:13:38.791Z | Question from Code | v1 | What is the line to compile it into an executable named a.out that it will print the value 5 to stdout? (You do not need to include the options to display warnings, build the symbol table for the debugger or select the C standard.) | #include <stdio.h>
int main() {
#ifdef MACRO
printf("%d\n", MACRO);
#endif
return 0;
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-13T06:14:46.588Z | Explain Code | v1 | null | #define MAXNAME = 32;
and then the declaration
char name[MAXNAME];
| null | null |
63c648055f004bf4898cf8bf | 2023-02-13T06:15:00.894Z | Question from Code | v1 | in the program. What will this declaration line become after the program has passed
through the C pre-processor?
| #define MAXNAME = 32;
and then the declaration
char name[MAXNAME];
| null | null |
63c648055f004bf4898cf8bf | 2023-02-13T06:17:21.767Z | Question from Code | v1 | What will be the output of the following program fragment? | #define SUPERVISOR(regular) regular + 5
int main() {
int regular_pay = 20;
int hours_worked = 10;
printf("pay is %d\n", (hours_worked * SUPERVISOR(regular_pay)));
// rest omitted
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-13T06:27:07.139Z | Question from Code | v1 | What is the line to compile it into an executable named a.out that it will print the value 5 to stdout? | #include <stdio.h>
int main() {
#ifdef MACRO
printf("%d\n", MACRO);
#endif
return 0;
} | null | null |
63c648055f004bf4898cf8bf | 2023-02-14T23:23:48.285Z | General Question | v1 | how to you hard code strncpy? | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-14T23:28:03.100Z | Question from Code | v1 | what does this print? | src = "abcdefghijklmno"
strncpy(dest, src, 10);
dest[9] = '\0';
printf("%s", dest); | null | null |
63c648055f004bf4898cf8bf | 2023-02-14T23:28:42.039Z | Question from Code | v1 | does dest have a null terminator | src = "abcdefghijklmno"
strncpy(dest, src, 10);
dest[9] = '\0';
printf("%s", dest); | null | null |
63c648055f004bf4898cf8bf | 2023-02-14T23:29:09.821Z | Question from Code | v1 | what does this print | src = "abcdefghijklmno"
strncpy(dest, src, 10);
dest[7] = '\0';
printf("%s", dest); | null | null |
63c648055f004bf4898cf8bf | 2023-02-14T23:47:28.191Z | Explain Code | v1 | null | #include <stdio.h>
#define SIZE 4
#define OVERFLOW 4
int main() {
int index = 0;
int i;
int before[SIZE] = {10, 10, 10, 10};
int a[SIZE] = {0, 0, 0, 0};
int after[SIZE] = {10, 10, 10, 10};
printf("Address of the variables:\n");
for (index = 0; index < SIZE; index++) {
printf("%lx -> &after[%d]\n", (unsigned long) &after[index], index);
}
for (index = 0; index < SIZE; index++) {
printf("%lx -> &a[%d]\n", (unsigned long) &a[index], index);
}
for (index = 0; index < SIZE; index++) {
printf("%lx -> &before[%d]\n", (unsigned long) &before[index], index);
}
printf("%lx -> &i\n", (unsigned long)&i);
printf("%lx -> &index\n", (unsigned long)&index);
printf("\n");
printf("Initial values:\n");
printf("i = %d\n", i);
printf("before = {%d, %d, %d, %d}\n", before[0], before[1], before[2], before[3]);
printf("a = {%d, %d, %d, %d}\n", a[0], a[1], a[2], a[3]);
printf("after = {%d, %d, %d, %d}\n", after[0], after[1], after[2], after[3]);
printf("\n");
for (i = 0; i < OVERFLOW; i++) {
a[i] = i * 10;
printf("i = %d\n", i);
printf("before = {%d, %d, %d, %d}\n", before[0], before[1], before[2], before[3]);
printf("a = {%d, %d, %d, %d}\n", a[0], a[1], a[2], a[3]);
printf("after = {%d, %d, %d, %d}\n", after[0], after[1], after[2], after[3]);
}
return 0;
}
| null | null |
63c648055f004bf4898cf8bf | 2023-02-14T23:52:08.406Z | Question from Code | v1 | what does this print? | #include <stdio.h>
#define SIZE 4
#define OVERFLOW 4
int main() {
int index = 0;
int i;
int before[SIZE] = {10, 10, 10, 10};
int a[SIZE] = {0, 0, 0, 0};
int after[SIZE] = {10, 10, 10, 10};
printf("Address of the variables:\n");
for (index = 0; index < SIZE; index++) {
printf("%lx -> &after[%d]\n", (unsigned long) &after[index], index);
}
for (index = 0; index < SIZE; index++) {
printf("%lx -> &a[%d]\n", (unsigned long) &a[index], index);
}
for (index = 0; index < SIZE; index++) {
printf("%lx -> &before[%d]\n", (unsigned long) &before[index], index);
}
printf("%lx -> &i\n", (unsigned long)&i);
printf("%lx -> &index\n", (unsigned long)&index);
printf("\n");
printf("Initial values:\n");
printf("i = %d\n", i);
printf("before = {%d, %d, %d, %d}\n", before[0], before[1], before[2], before[3]);
printf("a = {%d, %d, %d, %d}\n", a[0], a[1], a[2], a[3]);
printf("after = {%d, %d, %d, %d}\n", after[0], after[1], after[2], after[3]);
printf("\n");
for (i = 0; i < OVERFLOW; i++) {
a[i] = i * 10;
printf("i = %d\n", i);
printf("before = {%d, %d, %d, %d}\n", before[0], before[1], before[2], before[3]);
printf("a = {%d, %d, %d, %d}\n", a[0], a[1], a[2], a[3]);
printf("after = {%d, %d, %d, %d}\n", after[0], after[1], after[2], after[3]);
}
return 0;
}
| null | null |
63c648055f004bf4898cf8bf | 2023-02-15T19:30:18.827Z | General Question | v1 | if i set the middle of a char array to '\0', would the values after it become null values as well | null | null | null |
63c648055f004bf4898cf8bf | 2023-02-15T19:31:44.031Z | General Question | v1 | if i have char *s with size 10 and s[6] is originally 'a', then make s[5]='\0', what would s[6] be | null | null | null |
63c648055f004bf4898cf8bf | 2023-03-02T16:42:03.915Z | Question from Code | v1 | What are all possible combinations that the output can be | #include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int main() {
int ret;
printf("A\n");
ret = fork();
printf("B\n");
if (ret < 0) {
perror("fork");
exit(1);
} else if (ret == 0) {
printf("C\n");
} else {
printf("D\n");
}
printf("E\n");
return 0;
}
| null | null |
63c648055f004bf4898cf8bf | 2023-03-02T16:42:37.070Z | Question from Code | v1 | can the output be something other than A B D E B C E
| #include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int main() {
int ret;
printf("A\n");
ret = fork();
printf("B\n");
if (ret < 0) {
perror("fork");
exit(1);
} else if (ret == 0) {
printf("C\n");
} else {
printf("D\n");
}
printf("E\n");
return 0;
}
| null | null |
63c648055f004bf4898cf8bf | 2023-03-02T17:37:46.241Z | Question from Code | v1 | how do i modify the program so that each process creates exactly one a new process? | #include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int main(int argc, char **argv) {
if (argc != 2) {
fprintf(stderr, "Usage: forkloop <iterations>\n");
exit(1);
}
int iterations = strtol(argv[1], NULL, 10);
for (int i = 0; i < iterations; i++) {
int n = fork();
if (n < 0) {
perror("fork");
exit(1);
}
printf("ppid = %d, pid = %d, i = %d\n", getppid(), getpid(), i);
}
return 0;
}
| null | null |
63c648055f004bf4898cf8bf | 2023-03-02T17:38:51.445Z | Help Fix Code | v1 | null | #include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int main(int argc, char **argv) {
if (argc != 2) {
fprintf(stderr, "Usage: forkloop <iterations>\n");
exit(1);
}
int iterations = strtol(argv[1], NULL, 10);
for (int i = 0; i < iterations; i++) {
int n = fork();
if (n < 0) {
perror("fork");
exit(1);
}
printf("ppid = %d, pid = %d, i = %d\n", getppid(), getpid(), i);
}
return 0;
}
| modify the program so that each process creates exactly one a new process. | null |
63c648055f004bf4898cf8bf | 2023-03-02T17:40:25.491Z | Help Fix Code | v1 | null | #include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int main(int argc, char **argv) {
if (argc != 2) {
fprintf(stderr, "Usage: forkloop <iterations>\n");
exit(1);
}
int iterations = strtol(argv[1], NULL, 10);
for (int i = 0; i < iterations; i++) {
int n = fork();
if (n < 0) {
perror("fork");
exit(1);
}
printf("ppid = %d, pid = %d, i = %d\n", getppid(), getpid(), i);
}
return 0;
}
| how do you add an if statement that checks if the process is a child | null |
63c648055f004bf4898cf8bf | 2023-03-12T21:32:26.994Z | General Question | v2 | how do you check if a line from fgets starts with a tab? | null | null | null |
63c648055f004bf4898cf8bf | 2023-03-12T21:36:30.056Z | Question from Code | v2 | what is line[0] from this? | char line[50];
line = " hello"; | null | null |
63c648055f004bf4898cf8bf | 2023-03-12T21:37:15.871Z | Question from Code | v2 | what is line[0] from this? | char line[50];
strcpy(line, " hello"); | null | null |
63c648055f004bf4898cf8bf | 2023-03-12T21:38:19.819Z | Question from Code | v2 | what does this return | char line[50];
strcpy(line, " hello");
if (strcmp(line[0], "\t") == 0) {
printf("yay");
} | null | null |
63c648055f004bf4898cf8bf | 2023-03-12T21:39:18.681Z | Question from Code | v2 | what does this return | char line[50];
strcpy(line, " hello");
if (line[0] == "\t") {
printf("yay");
} | null | null |
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