#include <iostream>

using namespace std;
				/***********************************/
				/*** Functions and declairations ***/
				/***********************************/

void endrun();				/* ends the program  */
void display_menu(int blank_line);	/* displays the menu */
void pause_a_sec();			/* loop to pause     */
void pause_5_secs();			/* do pause loop 5 times */
void convert(float quantity);		/* case structure    */
					/*calculation function */
void clear_scrn();			/* clears the screen */
int choice;
char YesOrNo;


/********************************************/

				/***********************************/
main()		                /*** displays menu & passes choice ***/
{				/*** to the convert() function ***/
				/***********************************/

do
	{
	display_menu(0);
	printf("\n		Enter choice then press <Enter> ");
	cin >> choice;
	convert(choice);
	}

while (choice != 9);
}
			        /***************************************/
				/*** tests for end of pgm and choice ***/
				/*** out of range, gets quantity to  ***/
				/*** convert, performs calcs and     ***/
				/*** prints, using case structure    ***/
				/***************************************/
void convert(float quantity)
{

if (choice == 9)
{
clear_scrn();
endrun();
}
	if (choice < 1 || choice > 9)
	{
	printf("\n			<<< CHOICE IS OUT OF RANGE  PRESS ENTER >>> ");
	cin.get();
	cin.get();		
	clear_scrn();
	main();
	}
else
printf("\n       		Enter the quantity to be converted ");
//printf("\n            ");
cin >> quantity;
switch(choice)
	{
case 1:                       //This works fine but I really want to prompt for Enter
	printf("\n	%7.2f Inches = %7.2f Centemeters\n",
		quantity ,(quantity * 2.54));
	cout << "\n		Return to Menu - press Y and Enter " << flush;
	
	cin >> YesOrNo;
	if ((YesOrNo == 'Y') || (YesOrNo == 'y')){
	clear_scrn();
	break;
	}
	else
	endrun();
case 2:                     //This works with 2 cin.gets
	printf("\n	%7.2f Centemeters = %7.2f Inchess\n",
		quantity ,(quantity / 2.54) );
	cout << "\n       		Press ENTER to return to menu" << endl;
	cin.get();	
	cin.get();
//	pause_5_secs();
	clear_scrn();

	break;
case 3:                    //This works with 2 cin.ignores
	printf("\n	%7.2f Feet = %7.2f Meters\n",	
		quantity ,(quantity * .3048) );
	printf("\n       		Press ENTER to return to menu");
	cin.ignore();
        cin.ignore();
//	pause_5_secs();
	clear_scrn();

	break;
case 4:                    //This does NOT pause
	printf("\n	%7.2f Meters = %7.2f Feet\n",
		quantity ,(quantity * 3.2808) );
		printf("\n       		Press ENTER to return to menu");
	cin.get();
//	pause_5_secs();
	clear_scrn();

	break;
case 5:                   //This does NOT pause   
	printf("\n	%7.2f Miles = %7.2f Kilometers\n",
		quantity ,(quantity * 1.6093) );
	printf("\n       		Press ENTER to return to menu");
	cin.ignore();	
//	pause_5_secs();
	clear_scrn();

	break;
case 6:
	printf("\n	%7.2f Kilometers = %7.2f Miles\n",
		quantity ,(quantity * .6314) );
	printf("\n       		Press ENTER to return to menu");
	cin.get();	
//	pause_5_secs();
	clear_scrn();

	break;
case 7:
	printf("\n	%7.2f farenheit = %7.2f Celcius\n",
		quantity ,((quantity - 32) * 5.0/9.0) );
	printf("\n       		Press ENTER to return to menu");
	cin.get();
//	pause_5_secs();
	clear_scrn();

	break;
case 8:
	printf("\n	%7.2f Celcius = %7.2f Farenheit\n",
		quantity ,(9.0/5.0) * quantity + 32 );
		printf("\n       		Press ENTER to return to menu");
	cin.get();
//	pause_5_secs();
	clear_scrn();

	break;
	}


}

void display_menu(int blank_line)
	
					/**************************/
					/*** Prints Menu on screen***/
					/****************************/

{
printf("\n		      Acme Metric Conversion Company ");
printf("\n			         Main Menu ");
printf("\n							");
printf("\n			Your options are as follows: ");
printf("\n							 ");
printf("\n			1   Inches to Centemeters    ");
printf("\n			2   Centementers to Inches   ");
printf("\n			3   Feet to Meters           ");
printf("\n			4   Meters to Feet           ");
printf("\n			5   Miles to Kilometers      ");
printf("\n			6   Kilometers to Miles      ");
printf("\n			7   Farenheit to Celcius      ");
printf("\n			8   Celcius to Farenheit      ");
printf("\n			9   End this session         ");

for (blank_line = 1; blank_line < 8; blank_line++)
printf("\n");
}

void endrun()			/* Exits the Program */
{
printf("			<<< Exiting Program >>> ");
clear_scrn();
pause_a_sec();
exit(0);
}

void pause_a_sec()		/* Simple loop to pause a sec */
{
long x;
for (x = 1; x < 500000; x++)
;
}

void pause_5_secs()		/* runs pause_a_sec 5 times */
{
int y;
for (y = 1; y < 1500; y++)
pause_a_sec();
}

void clear_scrn()		/* Clears the screen between calcs */
{
int cls;
for (cls = 1; cls < 28; cls++)
printf("\n");
}