Miscellany

#include <iostream>
#include <iomanip>
using namespace std;

void Problem2();
//double AvgThreeNums(double num1, double num2, double num3);
double AvgThreeNums(double, double, double);

int main(void)  
{      
Problem2();
}

void Problem2() 
{
     double num1 = 0;
     double num2 = 0;
     double num3 = 0;
     cout << "Please enter #1: ";
     cin >> num1;
     cout << "Please enter #2: ";
     cin >> num2;
     cout << "Please enter #3: ";
     cin >> num3;
     double avg = AvgThreeNums(num1, num2, num3);

       cout << setw(15) << num1 << num2 << num3 << setprecision(3) << "Avg: " << avg ;
}
double AvgThreeNums(double num1, double num2, double num3)
{
        return num1 + num2 + num3 / 3;
}