// This program demonstrates a union.
#include <iostream>
#include <iomanip>
using namespace std;

union PaySource
{
   int hours;         // Hours worked
   float sales;       // Amount of sales
};

int main()
{
   PaySource employee1;      // Define a union variable
   char payType;             // To hold the pay type
   float payRate;            // Hourly pay rate
   float grossPay;           // Gross pay

   cout << fixed << showpoint << setprecision(2);
   cout << "This program calculates either hourly wages or\n";
   cout << "sales commission.\n";

   // Get the pay type, hourly or commission.
   cout << "Enter H for hourly wages or C for commission: ";
   cin >> payType;

   // Determine the gross pay, depending on the pay type.
   if (payType == 'H' || payType == 'h')
   {
      // This is an hourly paid employee. Get the
      // pay rate and hours worked.
      cout << "What is the hourly pay rate? ";
      cin >> payRate;
      cout << "How many hours were worked? ";
      cin >> employee1.hours;

      // Calculate and display the gross pay.
      grossPay = employee1.hours * payRate;
      cout << "Gross pay: $" << grossPay << endl;
   }
   else if (payType == 'C' || payType == 'c')
   {
      // This is a commission-paid employee. Get the
      // amount of sales.
      cout << "What are the total sales for this employee? ";
      cin >> employee1.sales;

      // Calculate and display the gross pay.
      grossPay = employee1.sales * 0.10;
      cout << "Gross pay: $" << grossPay << endl;
   }
   else
   {
      // The user made an invalid selection.
      cout << payType << " is not a valid selection.\n";
   }
   return 0;
}