//---------------------------------------------------
// Purpose: Program to demonstrate reference parameters
// Author:  John Gauch
//---------------------------------------------------
#include <iostream>
using namespace std;

// Function to prompt user for input
void GetData(int &Age, float &Height, char &Gender)
{
   // Prompt user for Age
   do
   {
      cout << "Enter your Age: ";
      cin >> Age;
   }
   while (Age <= 0);

   // Prompt user for height
   do
   {
      cout << "Enter your height in meters: ";
      cin >> Height;
   }
   while (Height <= 0);

   // Prompt user for Gender
   do
   {
      cout << "Enter your Gender (m or f): ";
      cin >> Gender;
   }
   while ((Gender != 'm') && (Gender != 'f'));
}

// Main body of program
int main()
{
   // Local variables
   int UserAge;
   float UserHeight;
   char UserGender;

   // Read and write user data
   GetData(UserAge, UserHeight, UserGender);
   cout << "Age = " << UserAge << endl
      << "Height = " << UserHeight << endl
      << "Gender = " << UserGender << endl;
   return 0;
}