结构calloc c

void *calloc(size_t num, size_t size);

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

int main() {
    int *arr;
    int n, i;

    printf("Enter the number of elements: ");
    scanf("%d", &n);

    arr = (int *)calloc(n, sizeof(int));

    if (arr == NULL) {
        printf("Memory allocation failed.");
        return -1;
    }

    printf("The elements of the array are:\n");
    for (i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }

    free(arr);

    return 0;
}