operator-运算符重载"="

最新推荐文章于 2024-11-07 22:00:00 发布

beattwo

最新推荐文章于 2024-11-07 22:00:00 发布

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分类专栏： C++学习笔记 All 文章标签： C C++ C#

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本文介绍了一个简单的C++程序员类的设计与实现过程，并通过具体示例展示了类的使用方法，包括成员变量的设置与获取，以及赋值运算符重载的实现。

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//Programmer.h
#pragma once
#include <iostream>  
#include <string>
class Programmer
{
public:
	Programmer() {};
	~Programmer() {};
	void SetName(std::string &in_name) { m_name = in_name; }
	void SetLanguage(std::string &in_language) { m_language = in_language; }
	void SetLevel(int in_level) { m_level = in_level; }
	std::string GetName() { return m_name; }
	std::string GetLanguage() { return m_language; }
	int GetLevel() { return m_level; }
	Programmer& operator= (const Programmer& in_programmer)
	{
		if ( this != &in_programmer )
		{
			m_name = in_programmer.m_name;
			m_language = in_programmer.m_language;
			m_level = in_programmer.m_level;
		}
		return *this;
	}
private:
	std::string m_name;
	std::string m_language;
	int m_level;
};



#include "stdafx.h"   
#include "programmer.h"
int _tmain(int argc, _TCHAR* argv[])   
{   
	Programmer a;
	std::string name = "Kevin Chen";
	std::string language = "C++";
	int level = 1;
	a.SetName(name);
	a.SetLanguage(language);
	a.SetLevel(level);
	Programmer b = a; // copy the values from a
	std::cout<<a.GetName()<<std::endl;
	std::cout<<b.GetName()<<std::endl;
	std::cout<<a.GetLanguage()<<std::endl;
	std::cout<<b.GetLanguage()<<std::endl;
	std::cout<<a.GetLevel()<<std::endl;
	std::cout<<b.GetLevel()<<std::endl;

	std::string name2 = "Jack Chen";
	std::string language2 = "C++";
	int level2 = 2;
	b.SetName(name2);
	b.SetLanguage(language2);
	b.SetLevel(level2);
	std::cout<<a.GetName()<<std::endl;
	std::cout<<b.GetName()<<std::endl;
	std::cout<<a.GetLanguage()<<std::endl;
	std::cout<<b.GetLanguage()<<std::endl;
	std::cout<<a.GetLevel()<<std::endl;
	std::cout<<b.GetLevel()<<std::endl;

	return 0;   
}