#include <stdio.h>
#include <stdlib.h>
 
int main() {
    int *arr;
    int n, i;
    float sum = 0, avg;
 
    // Step 1: Get array size
    printf("Enter number of elements: ");
    scanf("%d", &n);
 
    // Step 2: Dynamically allocate memory
    arr = (int*) malloc(n * sizeof(int));
 
    if (arr == NULL) {
        printf("Memory allocation failed!\n");
        return 1;
    }
 
    // Step 3: Input array elements
    printf("\nEnter %d elements:\n", n);
    for (i = 0; i < n; i++) {
        printf("Element %d: ", i + 1);
        scanf("%d", &arr[i]);
        sum += arr[i];
    }
 
    // Step 4: Calculate average
    avg = sum / n;
 
    // Step 5: Display result
    printf("\nAverage of array elements = %.2f\n", avg);
 
    // Step 6: Free allocated memory
    free(arr);
 
    return 0;
}