#include <iostream>
#include <unistd.h>

using namespace std;
       
int main(void)
{
                   
       double dnumber1 = 0.0;
       double dnumber2 = 0.0;
       double dnumber3 = 0.0;
       double daverage = 0.0;
                   
       cout << "Please enter 3 numbers: " << endl;
       cin >> dnumber1;
       cin >> dnumber2;
       cin >> dnumber3;
                   
       daverage = (dnumber1 + dnumber2 +dnumber3) / 3;
                   
       cout << "The average of the numbers are: " << daverage << endl;
                   
       pause();
       return 0;
}