View Code of Problem 448

#include <cstdio>
#include <iostream>
#include <cmath>
using namespace std;
 
 
int main()
{
    double a[16],sum = 0;
    for(int i = 0; i < 12; ++i){
        cin >> a[i];
        sum += a[i];
    }
    double ave = sum*1.0/12;
    printf("$%.2f\n",ave);
}