C++ 后置运算符重载 178

原创于 2013-01-26 11:30:54 发布 · 450 阅读

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本文深入解析范磊老师的《零起点学通C++》中关于类模板和成员函数重载的实现，通过实例代码展示了如何在C++中使用类模板和成员函数重载来创建灵活且高效的代码结构。

参考范磊老师<<零起点学通C++>> 178 p.

#include <iostream>

using namespace std;

class num
{
public:
	num(){n = 1;cout<<"num()"<<endl;}
	~num(){cout<<"~num()"<<endl;}
	num(num &m){this->n =m.n;cout<<"num(&)"<<endl;}
	const num operator++(int o){num temp(*this);n++;return temp;}
	int get(){return n;}
protected:
	int n;
};

int main()
{
	num n;
	num a;

	cout<<n.get()<<"   "<<&n<<endl;
	cout<<a.get()<<"   "<<&a<<endl;
	a = n++;
	cout<<"----------------++n"<<endl;
	cout<<n.get()<<"   "<<&n<<endl;
	cout<<a.get()<<"   "<<&a<<endl;

	return 0;
}

result:

num()
num()
1 0x7fffffca48a0
1 0x7fffffca4890
num(&)
~num()
----------------++n
2 0x7fffffca48a0
1 0x7fffffca4890
~num()
~num()