#include<iostream>
using namespace std;
float average(int *,int );
void main()
{
const int n=100;
int a[n];
for(int i=0;i<n;i++) a[i]=100+i;
cout<<"average: "<<average(a,n)<<endl;
}
float average(int *p,int x)
{
int total=0;
for(int i=0;i<x;i++)
total=total+p[i];
return total/x;
}