c15_08.cpp

这是编程之道C-C++中的源代码,很简练,可以用于相关教学和重新熟悉C-C++时使用

//重载运算符"+"
#include <iostream >
using namespace std;

class CCounter
{
public:
	CCounter():m_val(0){ }
	CCounter(unsigned initVal):m_val(initVal){ }
	~CCounter(){}

	unsigned GetVal() const  { return m_val; }
	void SetVal(unsigned x) {m_val = x; }
	CCounter operator+ (const CCounter &cnt);		//重载加(+）运算符
private:
	unsigned m_val;
};

CCounter CCounter::operator+(const CCounter & cnt)
{
	CCounter temp;
	temp.SetVal(m_val+ cnt.GetVal());
	return temp;
}

int main()
{
	CCounter counter1(2), counter2(4), counter3;	//创建三个CCounter类对象
	counter3 = counter1+counter2; 
	cout << "counter1的值是: " << counter1.GetVal() << endl;
	cout << "counter2的值是: " << counter2.GetVal() << endl;
	cout << "counter3=counter1+counter2的值是: " << counter3.GetVal() << endl;

	return 0;
}