#include <stdio.h>

int main() {
    int arr[]={1,2,3,4,5};
    int n=sizeof(arr)/sizeof(arr[0]);
    int sum=0;
    for(int i=0;i<n;i++){
        sum+=arr[i];
    }
    float average=(float)sum/n;
    printf("average of array elements:%.2f\n", average);
    return 0;
}