// Celsius.cpp - a quick 1st example of a program
//
// Temperature Conversion
//
// This test program asks for the user's name,
// and a temperature in degrees Fahrenheit.
// The output is the temperature in degrees Celsius.
//
// ----------------------------------------------------------------------------

#include <iostream>
#include <string>
using namespace std ;	// adds all preceding declarations in the
                        // std namespace to the global namespace
		        // a C++ stmt., not a preprocessor directive

// Constants used in temperature conversion
//	These are global.  We'll discuss this more later
const float FAHRENHEIT_BASE = 32.0;
const float F2C_SCALE = 1.8;

// ------------------------------- Main -------------------------------

int main()
{
	// ---------------------------------------------------------------------
	// Variables:
	//   fahrenheit is the temperature in degrees Fahrenheit.
	//   celsius    is the temperature in degrees Celsius.
	//   name       is the user's first name
	// ---------------------------------------------------------------------
	float fahrenheit, celsius;
	string firstName ;

	cout << "Hello, what is your first name? => ";
	cin >> firstName;
	cout << endl;

	cout << "\nHello, " << firstName
	     << ", please enter a temperature in Fahrenheit) => ";
	cin >> fahrenheit;
	cout << endl;

	celsius = ( fahrenheit - FAHRENHEIT_BASE ) / F2C_SCALE;

	cout << "The corresponding temperature in celsius is: "
	     << celsius << " .\n" << endl;

	return 0;
}