/*********************************************************************\
PROGRAM: account.cpp
PURPOSE: to accumulate the total of credit and debit transactions
AUTHOR: Tony Jinman
DATE WRITTEN: 11/05/00
LAST UPDATE:  11/05/00
\*********************************************************************/

#include<iostream.h>
#include<iomanip.h>
#include<conio.h>

//define function macros
#define g(x,y) gotoxy(x,y)
#define JL setiosflags(ios::left)
#define JR setiosflags(ios::right)

void main()
{//start of function main
	float credits=0,debits=0,amount=0;
	char response;

	cout<<setiosflags(ios::showpoint);//shows decimal point
	cout<<setiosflags(ios::fixed);//standard base 10
	cout<<setprecision(2);//set to 2 d.p.

	//display opening menu
	g(45,1);
	cout<<"Credits";
	g(45,2);
	cout<<"===========";
	g(60,1);
	cout<<"Debits";
	g(60,2);
	cout<<"===========";

	int cRow=3; //for locating credit row
	int dRow=3; //for locating debit row
	g(45,cRow);
	cout<<"£"<<setw(10)<<JR<<credits;//output right hand justified
	g(60,dRow);                      //in a field of 10 characters
	cout<<"£"<<setw(10)<<JR<<debits;

	g(31,10);
	cout<<"Continue (Y/N)?";
	do
	{//start of do loop
		g(47,10);
		response=getche();
		if(response>'Y')
			response-=32;//convert to upper case
		if(response!='Y'&&response!='N')//invalid key pressed
			cout<<"\a\b";
	}while(response!='Y'&&response!='N');//end of do loop

	g(31,10);
	cout<<"                   ";
	//start main loop

	while(response!='N')
	{//start of main while loop
		g(1,5);
		cout<<"Enter transaction amount: £";
		g(27,5);
		cout<<"          ";
		g(27,5);
		cin>>amount;

		//evaluate amount
		if(amount>=0)
		{//start of if
			credits+=amount;
			g(45,cRow++);//increase credit row count
			cout<<"£"<<setw(10)<<JR<<credits;
		}//end of if
		else
		{//start of else
			debits+=amount;
			g(60,dRow++);//increase debit row count
			cout<<"£"<<setw(10)<<JR<<debits;
		}//end of else

		g(27,10);
		cout<<"Another transaction (Y/N)?";
		do
		{//start of do loop
			g(54,10);
			response=getche();
			if(response>'Y')
				response-=32;//convert to upper case
			if(response!='Y'&&response!='N')//invalid key pressed
				cout<<"\a\b";
		}while(response!='Y'&&response!='N');//end of do loop
		g(27,10);
		cout<<"                             ";
	}//end of main while loop

	clrscr();
	g(31,10);
   cout<<"PROGRAM TERMINATED";
}//end of function main