//	;--------------------------------------------------------------------
//	;Program Name:	demoprob23.cpp
//	;Problem Numb:	23
//	;Author:		Jim Adams
//	;Class:			CIS162AB
//	;Date:			November 07,2001
//	;Description:	Demonstrates a Money Class
//	;---------------------------------------------------------------------
#include <iostream.h>		//	For cout, etc
#include <stdio.h>			//	For sprintf
#include <ctype.h>			//	For isdigit()
#include <string.h>			//	For string function such as strcpy
#include <iomanip.h>		//	For setw()

struct	string				//	for easier passing to and from functions
{
	char	st[20];
};


class Money
{
public:
	string dollar(int);		// member function prototype
	string dollar(float);	// member function prototype
	string dollar(long);	// member function prototype
	string dollar(double);	// member function prototype
	string expand(double);	// member function for format
};

Money	m1;					// Declare abstract variables
string	str;				// Special structure for functions

void main(void)
{
	//	Set up the test data, all four data types
	int		d1=10;
	float	d2=(float) 128.99;
	long	d3=12345678;
	double	d4=1234567890.12;

	//	Call the format member function
	str=m1.dollar(d1);
	cout << str.st << endl;
	str=m1.dollar(d2);
	cout << str.st << endl;
	str=m1.dollar(d3);
	cout << str.st << endl;
	str=m1.dollar(d4);
	cout << str.st << endl;
}



string Money::dollar(int d)		// Member Function
{
	double	pass;
	pass=d;
	return(m1.expand(pass));
}


string Money::dollar(float d)	// Member Function
{
	double	pass;
	pass=d;
	return(m1.expand(pass));
}


string Money::dollar(long d)	// Member Function
{
	double	pass;
	pass=d;
	return(m1.expand(pass));
}


string Money::dollar(double d)	// Member Function
{
	double	pass;
	pass=d;
	return(m1.expand(pass));
}



//	Member function to format the data
//	Passed: A double with the value to format
//	Returns: A 20-byte string with formatted dollar amount
string Money::expand(double d)	// Member Function
{
	char	st1[15];	//	ASCII version of input number
	char	st2[20];	//	Converted and formatted number
	int		k;
	int		i;

	memset(st2,' ',20);
	sprintf(st1,"%14.2f",d);
	st2[19]=0;			//	string termination
	st2[18]=st1[13];	//	move in hundreths
	st2[17]=st1[12];	//	move in tenths
	st2[16]=st1[11];	//	move in point
	k = 15;
	for (i=10;  i>=0;  i--)
		{
		if (isdigit(st1[i]))	//	test for 0-9
			st2[k--]=st1[i];
		else
			break;				//	otherwise bail
		if  (i==8 || i==5 || i==2)
			st2[k--]=',';		//	shove in a comma
		}
	if (st2[k+1]==',')			//	place $-sign
		st2[k+1]='$';
	else
		st2[k]='$';

	strcpy(str.st,st2);			//	copy to string struct
	return(str);				//	return the formatted string
}