Media Con Funzioni

#include "iostream"

float Media(int a, int b, int c);

using namespace std;

int main()
{
    int a,b,c;
    cin>>a>>b>>c;
    cout<<Media(a,b,c)<<endl;
    system("PAUSE");
    return 0;
}

float Media(int a, int b, int c)
{
    return (a+b+c)/3.;
}