#include "stdafx.h"
#include <cstdlib>
#include <iostream>
#include <iomanip>


using namespace std;

void functionfrommain ();

void getUserInput (char& Y);

void validshapes ();

void areacalculations (char& S, char& C, char& R, double& length, double& radius, double& lengthtwo, double& width);

int main(int argc, char *argv[])
{
	char Y = Y;
	char S = S;
	char C = C;
	char R = R;
	const double PI = 3.14159;
	double length; double radius; double lengthtwo; double width;

	functionfrommain ();

	//do
	//{

	//double length = 0;
	//double radius = 0;
	//double lengthtwo = 0;
	//double width = 0;

	getUserInput (Y);

	if (Y == 'Y' || Y == 'y')
	{
	validshapes ();

	areacalculations (S, C, R, length, radius, lengthtwo, width);


	}

	else
	{
	cout << "Thank you for using the Area Calculator Service." << endl;
	}

	//while ((Y == 'Y' || Y == 'y')); 

	system("PAUSE");
	return EXIT_SUCCESS;
}



void functionfrommain ()
{

	cout <<"This program the area for a user specified geometric " << endl;
	cout << "shape. You will be asked to enter a code representing the shape. " << endl;
	cout <<"Depending on your choice,the program will prompt you for " << endl;
	cout <<"additional information necessary to calculate the area. " << endl;
	cout <<" " << endl;

	cout <<"You will be asked if you want to enter <more> data. " << endl;
	cout <<"Follow the directions provided to either stop the program or continue." << endl;
	cout <<" " << endl;


	cout << "Do you want to <enter> more data ?" << endl;
}

void getUserInput (char& Y)
{
	cout << "Enter Y to continue anything else to stop: ";
	cin >> Y;
	cout << " " << endl;
}

void validshapes ()
{
	cout << setw(5) << "-- VALID SHAPES --" << endl;
	cout << setw(5) << "Enter S for square" << endl;
	cout << setw(5) << "Enter C for circle" << endl;
	cout << setw(5) << "Enter R for rectangle" << endl;
}

void areacalculations (char& S, char& C, char& R, double& length, double& radius, double& lengthtwo, double& width)
{
	const double PI = 3.14159;
	char answer;

	bool bRepeat;

	do
	{
	bRepeat = false;

	cout << "Enter the proper letter : ";
	cin >> answer;


	if (answer == 'S' || answer == 's')
	{
	cout <<"Enter the length of 1 side of the square: ";
	cin >> length;
	cout <<"The area of your square is : " << length*length << endl;
	cout << setiosflags(ios::fixed)
	<< setprecision(2);
	}
	else if (answer =='C' || answer == 'c')
	{
	cout <<"Enter the radius of the circle : ";
	cin >> radius;
	cout <<"The area of your circle is : " << PI*radius*radius << endl;
	cout << setiosflags(ios::fixed)
	<< setprecision(2);
	}
	else if (answer =='R' || answer == 'r')
	{
	cout <<"Enter the length of the rectangle : ";
	cin >> lengthtwo;
	cout << "Enter the width of the rectangle : ";
	cin >> width;
	cout << "The area of your rectangle is : " << lengthtwo*width << endl;
	cout << setiosflags(ios::fixed)
	<< setprecision(2);
	}
	else
	{
	cout << "Invalid input " << answer << ". Please reenter" << endl;
	bRepeat = true;
	}
	}

	} while (bRepeat);