#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("averaage of elemenst: %.2f",average);
    
return 0;
}