#include <stdio.h>
#include <stdlib.h>
 
int main() {
    int *arr;
    int n, i;
 
    printf("Enter number of elements: ");
    scanf("%d", &n);
 
    // Allocate memory dynamically using calloc()
    arr = (int*) calloc(n, sizeof(int));
 
    // Check if memory allocation was successful
    if (arr == NULL) {
        printf("Memory allocation failed!\n");
        return 1;
    }
 
    // Input elements
    printf("\nEnter %d elements:\n", n);
    for (i = 0; i < n; i++) {
        printf("Element %d: ", i + 1);
        scanf("%d", &arr[i]);
    }
 
    // Display elements
    printf("\nArray elements are:\n");
    for (i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }
 
    // Free allocated memory
    free(arr);
 
    printf("\n\nMemory has been freed successfully.\n");
 
    return 0;
}