//  ;-----------------------------------------------------------
//  ; Program Name:   Class_Demo								
//  ; File:           Demoprob2.cpp							
//  ; Description:    Uses Sizeof, Setf, Precision, Width, Overflow
//  ; Author:         Jim Adams								
//  ; Environment:    MS C++ 6.0								
//  ; Date Written:   10/02/2000
//  ;-----------------------------------------------------------
#define display cout <<
#define input cin >>
#include <iostream.h>
#include <math.h>

//	Variable definitions
char	status_byte		='Q';
int		counter			=0;
long	dummy			=0;
short	i				=0;
short	test_variable	=0;
short	mask			=0;
long	distance		=100000; 
float	cost			=(float) 123456.66;
double	vector			=654321.543211;

//	Start of main logic section
void main(void)
{
	cout << "This program demonstrates the sizeof operator"		<< endl;
	cout << "  Integer Data Type:" << sizeof(counter)			<< endl;
	cout << "    Float Data Type:" << sizeof(vector)			<< endl;
	cout << "   Double Data Type:" << sizeof(vector)			<< endl;
	cout << "Character Data Type:" << sizeof(status_byte)		<< endl;
	cout << "    Short Data Type:" << sizeof(short)				<< endl;
	cout << "     Long Data Type:" << sizeof(dummy)				<< endl;


	//	Using #defines to redefine the language
	display "Enter a single character:";
	input status_byte;
	status_byte = status_byte + 1;
	display status_byte << endl;

	//	Try the I/O Format routines
	cout.setf(ios::fixed);
	cout.setf(ios::showpoint);

	cout.precision(5);
	cout << "Vector: " << vector << endl;
	cout.precision(4);
	cout << "Vector: " << vector << endl;
	cout.precision(3);
	cout << "Vector: " << vector << endl;
	cout.precision(2);
	cout << "Vector: " << vector << endl;
	cout.precision(1);
	cout.setf(ios::showpos);
	cout << "Vector: " << vector << endl;
	cout.precision(0);
	cout << "Vector: " << vector << endl;


	// Try a loop and a division operator
	counter=0;
	while (counter <= 8)
		{	
		vector = vector / 2;
		counter++;
		}

	cout << "New value of vector:" << vector << endl;


	//	Work with overflow examples
	test_variable = 32760;
	while (i < 10)
		{
		cout << test_variable++ << endl;
		i++;
		}

	//	Display the bits of a number
	//	Use logical bitwise AND operator
	test_variable = 32767;
	mask=32768;
	i=15;
	cout << test_variable << " base 10 is ";
	while (i>=0)
		{
		if ((test_variable & mask) == 0)
			cout << "0 ";
		else
			cout << "1 ";
		i--;
		mask=pow(2,i);
		}

	cout << "in binary " << endl;
}