c38.cpp

《C++程序设计习题及解答》配套代码VC版

// c38.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "PR1.h"
#include "PR2.h"
#include <iostream.h>

int main(int argc, char* argv[])
{
	PR1 p1;
	PR2 p2;

	if ( !InUse( p1, p2 ) )
		cout << "Printer idle" << endl;
	cout << endl;

	cout << "Setting p1 to printing...\n";
	p1.SetPrint(1);
	if ( InUse( p1, p2 ) )
		cout << "Now, printer in use.\n";
	cout << endl;

	cout << "Turn off p1...\n";
	p1.SetPrint(0);
	if ( !InUse( p1, p2 ) )
		cout << "Printer idle\n";
	cout << endl;

	cout << "Turn on p2...\n";
	p2.SetPrint(1);
	if ( InUse( p1, p2 ) )
		cout << "Now, printer in use.\n";
	cout << endl;

	return 0;
}


int InUse( PR1 o1, PR2 o2 )
{
	if ( o1.printing || o2.printing )
		return 1;
	else
		return 0;
}