#include <iostream>
using namespace std;
void calcAvg(double a , double b , double c , double d)
{
double sum = a+b+c+d;
double avg = sum/4;
cout<<"Average of the 4 entered numbers is = "<<avg;
}
int main()
{
double n1 , n2 , n3 , n4;
cout<<"Enter 4 whole numbers\n";
cin>>n1;
cin>>n2;
cin>>n3;
cin>>n4;
calcAvg(n1,n2,n3,n4);
}