write a c program to calculate average of array elements

#include <stdio.h>
main() {
    int n, i, num[100];
    float  sum = 0.0, avg;
    printf("Enter the size array : n");
    scanf("%d", &n);
    for (i = 0; i < n; ++i) {
        printf("Enter %d number : ", i + 1);
        scanf("%d", &num[i]);
        sum += num[i];
    }
    avg = sum / n;
    printf("Average = %.2f", avg);
getch();
}