6.08－重载++.cpp

来自「Visual C++的课件」· C++ 代码 · 共 35 行

// Listing 10.8
// The Counter class

#include <iostream.h>

class Counter
{
public:
	Counter();
	~Counter(){}
	int GetItsVal()const { return itsVal; }
	void SetItsVal(int x) {itsVal = x; }
	void Increment() { ++itsVal; }
	void operator++ () { ++itsVal; }

private:
	int itsVal;

};

Counter::Counter():
itsVal(0)
{}

int main()
{
	Counter i;
	cout << "The value of i is " << i.GetItsVal() << endl;
	i.Increment();
	cout << "The value of i is " << i.GetItsVal() << endl;
	++i;
	cout << "The value of i is " << i.GetItsVal() << endl;
	return 0;
}