// Unit conversion.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

using namespace std;

int KMtoM ()
{
	float km;
	cout << "What is your distance in kilometers? ";
	cin >> km;
	double miles = km * 0.6214;
	cout << endl << "Your distance of " << km << " kilometers is " << miles << " miles." << endl << endl;
	return 0;
}

int MtoKM ()
{
	float miles;
	cout << "What is your distance in miles? ";
	cin >> miles;
	double km = miles * 1.609344;
	cout << endl << "Your distance of " << miles << " miles is " << km << " kilometers." << endl << endl;
	return 0;
}

int CtoF ()
{
	float celsius;
	cout << "What is your temperature in Celsius? ";
	cin >> celsius;
	double fahr = (celsius * 1.8) + 32;
	cout << endl << "Your temperature of " << celsius << "\370 Celsius is " << fahr << "\370 Fahrenheit." << endl << endl;
	return 0;
}

int FtoC ()
{
	float fahr;
	cout << "What is your temperature in Fahrenheit? ";
	cin >> fahr;
	float celsius = (fahr - 32) * (5.0f/9.0f);
	cout << endl << "Your temperature of " << fahr << "\370 Fahrenheit is " << celsius << "\370 Celsius." << endl << endl;
	return 0;
}

int Conversion ()
{
	float choice = 0;
	do
	{
		do
		{
			cout << endl << "Which conversion would you like to perform (1-5)?" << endl << endl;
			cout << "1. Celsius -> Fahrenheit" << endl;
			cout << "2. Fahrenheit -> Celsius" << endl;
			cout << "3. Miles -> Kilometers" << endl;
			cout << "4. Kilometers -> Miles" << endl;
			cout << "5. Return to Main Menu" << endl << endl;
			cout << "? ";
			cin >> choice;
		} while (choice != 1 && choice != 2 && choice != 3 && choice != 4 && choice != 5);
		cout << endl << "You chose number: " << choice << endl << endl;
		if (choice == 1)
			CtoF ();
		else if (choice == 2)
			FtoC ();
		else if (choice == 3)
			MtoKM ();
		else if (choice == 4)
			KMtoM ();
	} while (choice != 5);
	return 0;
}

int GuessGame ()
{
	cout << "This is a guessing game.  You will attempt to guess a random whole number " << endl;
	cout << "between and including 1 and 100.  You can keep guessing until you guess right." << endl << endl;
	int Secret;
	int Guess;
	int Number;
	srand ( time(NULL) );
	Secret = rand() % 100 + 1;
	do
	{
		cout << "Guess the number (1 to 100): ";
		cin  >> Guess;
		if (Secret < Guess)
		{
			cout << "The secret number is lower." << endl;
			Number++;
		}
		else if (Secret > Guess)
		{
			cout << "The secret number is higher." << endl;
			Number++;
		}
		else
			Number++;
	} while (Secret != Guess);
	cout << endl << "Congratulations.  You have guessed the correct number.  It took you " << Number << " guesses.";
	return 0;
}

int _tmain(int argc, _TCHAR* argv[])
{
	float choice = 0;
	do
	{
		do
		{
			cout << endl << "Would you like to play a game or do some unit conversions (1-3)?" << endl << endl;
			cout << "1. Play a game" << endl;
			cout << "2. Do a conversion" << endl;
			cout << "3. Quit" << endl << endl;
			cout << "? ";
			cin >> choice;
		} while (choice != 1 && choice != 2 && choice != 3);
		cout << endl << endl;
		if (choice == 1)
			GuessGame ();
		else if (choice == 2)
			Conversion ();
	} while (choice != 3);
	return 0;
}