l8_3.cpp

《C++程序设计教程》电子教案及例题源码

#include "iostream.h"
class  CInt 
{
private:
	int i;
public:
	CInt(int a=0);
	void Print();
	CInt operator ++();
	CInt operator ++(int);
};

CInt::CInt (int  a)
{ 
	i = a;
}

void CInt::Print()
{
	cout << "i=" << i << endl;
}

CInt CInt::operator ++()
{
	CInt temp;
	temp.i = ++i;
	return temp;
}

CInt CInt::operator ++(int)
{
	CInt temp;
	temp.i = i++;
	return temp;
}

void main(void)
{
	CInt  a(5), b(5), c, d;
	c = a++;
	d = ++b;
	cout << "a: ";
	a.Print();
	cout << "b: ";
	b.Print();
	cout << "c: ";
	c.Print();
	cout << "d: ";
	d.Print();
}