Mega Code Archive
Dynamic array of structures
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
struct node {
char *str;
int len;
};
int main(void) {
struct node **strarray = NULL;
int i = 0, count = 0;
char line[1024];
while(fgets(line, 1024, stdin) != NULL) {
/* add ONE element to the array */
strarray = (struct node **)realloc(strarray, (count + 1) * sizeof(struct node *));
/* allocate memory for one `struct node` */
strarray[count] = (struct node *)malloc(sizeof(struct node));
/* copy the data into the new element (structure) */
strarray[count]->str = strdup(line);
strarray[count]->len = strlen(line);
count++;
}
/* print the array */
for(i = 0; i < count; i++) {
printf("--\n");
printf("[%d]->str: %s", i, strarray[i]->str);
printf("[%d]->len: %d\n", i, strarray[i]->len);
}
/* free all strarray elements */
for(i = 0; i < count; i++) {
free(strarray[i]->str);
free(strarray[i]);
i++;
}
free(strarray);
return 0;
}
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