//Illustrates overloading the function name ave.
#include <iostream>
using namespace std;

double ave(double n1, double n2);
//Returns the average of the two numbers n1 and n2.

double ave(double n1, double n2, double n3);
//Returns the average of the three numbers n1, n2, and n3.

int main( )
{
    cout << "The average of 2.0, 2.5, and 3.0 is "
         << ave(2.0, 2.5, 3.0) << endl;

    cout << "The average of 4.5 and 5.5 is "
         << ave(4.5, 5.5) << endl;

    return 0;
}

double ave(double n1, double n2)
{
    return ((n1 + n2)/2.0);
}

double ave(double n1, double n2, double n3)
{
    return ((n1 + n2 + n3)/3.0);
}