Question

How to allocate memory for array of structs in C

Answer 1

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct  {
    char name[16];
    int age;
} worker;

#define SIZE 3

int main()
{
    worker *warr[SIZE];
    char s[2];

    for (int i = 0; i <= SIZE; ++i) {
        warr[i] = malloc(sizeof(worker));
        sprintf(s, "%d", i);
        strcat(strcpy(warr[i]->name, "Dana-"), s);
        warr[i]->age = 40 + i;
    }

    for (int i = 0; i <= SIZE; ++i) {
        printf("name: %s : age: %d\n", warr[i]->name, warr[i]->age);
    }

    for (int i = 0; i <= SIZE; ++i) {
        free(warr[i]);
    }

    return 0;
}



/*
run:

name: Dana-0 : age: 40
name: Dana-1 : age: 41
name: Dana-2 : age: 42
name: Dana-3 : age: 43

*/

 

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