#include<iostream>
using namespace std;

// compute will the average of three numbers
float average(float a, float b, float c);


int main()
{
 float a,b,c;

 // Get three inputs
 cout << "Enter three numbers: ";
 cin >> a >> b >> c;

 // Report average
 cout << "The average is " << average(a,b,c) << endl;

 return 0;
}

// compute the average of three inputs
float average(float a, float b, float c)
{
 return (a+b+c)/3;
}