C++类类型转换普通类型

main.cpp

#include<iostream>
#include"Boy.h"
using namespace std;

ostream & operator<<(ostream & os, const Boy & boy)
{
	os << "ID:" << boy.id << "t姓名:" << boy.name << "t年龄:" << boy.age << "t薪资:"
		<< boy.salary << "t黑马系数:" << boy.darkHorse;
	return os;
}

istream & operator>>(istream & is, Boy & boy)
{
	string name2;
	is >> name2 >> boy.age >> boy.salary >> boy.darkHorse;
	boy.name = (char*)malloc((name2.length() + 1) * sizeof(char*));
	strcpy_s(boy.name, name2.length() + 1, name2.c_str());
	return is;
}



int main()
{
	Boy boy1("张华森",24,20000,10);
	int power = boy1;
	char*name = boy1;
	cout << name << endl;
	cout << power << endl;




	system("pause");
	return 0;
}

Boy.h

#pragma once
#include<iostream>
#include<string>
using namespace std;
class Boy
{
public:
	Boy(const char*name =NULL, int age=0,int salary=0,int darkHorse=0);
	Boy(int salary);
	Boy(char *name);
	~Boy();
	Boy&operator=(const Boy&boy);

	bool operator>(const Boy&boy);
	bool operator < (const Boy&boy);
	bool operator==(const Boy&boy);

	//下标运算符重载
	int operator[](string index);
	friend ostream& operator<<(ostream &os,const Boy&boy);
	friend istream & operator>>(istream&is, Boy&boy);

	operator int()const;
	operator char*()const;

	string description();

private:
	char*name;
	int age;
	int salary;
	int darkHorse;  //黑马，潜力值
	unsigned int id;  //编号
	static int LAST_ID;

	int power()const;
};

Boy.cpp

#include "Boy.h"
#include<sstream>

#define NUM 100

int Boy::LAST_ID = 0;
Boy::Boy(const char * name, int age, int salary, int darkHorse)
{
	if (!name)
	{
		name = "为命名";
	}

	this->name = new char[strlen(name) + 1];
	strcpy_s(this->name, strlen(name) + 1,name);

	this->age = age;
	this->salary = salary;
	this->darkHorse = darkHorse;
	this->id = ++LAST_ID;
}

Boy::Boy(int salary)
{
	const char *defultName = "未命名";

	this->name = new char[strlen(defultName) + 1];
	strcpy_s(this->name, strlen(defultName) + 1, defultName);

	this->age = 0;
	this->salary = salary;
	this->darkHorse = 0;
	this->id = ++LAST_ID;
}

Boy::Boy(char * name)
{
	
	this->name = new char[strlen(name) + 1];
	strcpy_s(this->name, strlen(name) + 1, name);

	this->age = 0;
	this->salary =0;
	this->darkHorse = 0;
	this->id = ++LAST_ID;
}

Boy::~Boy()
{
	if (name)
	{
		delete name;
	}
}

Boy & Boy::operator=(const Boy & boy)
{
	if (name)
	{
		delete  name; //释放原来的内存
	}
	name = new char[strlen(boy.name) + 1];//分配新的内存
	strcpy_s(name, strlen(boy.name) + 1, boy.name);

	this->age = boy.age;
	this->salary = boy.salary;
	this->darkHorse = boy.darkHorse;
	return*this;

}

bool Boy::operator>(const Boy & boy)
{
	//设置比较规则：
	//薪资*黑马系数+（100-年龄）*100
	if (power()>boy.power())
	{
		return true;
	}
	else
	{
		return false;
	}
}

bool Boy::operator<(const Boy & boy)
{
	if (power()<boy.power())
	{
		return true;
	}
	else
	{
		return false;
	}
}

bool Boy::operator==(const Boy & boy)
{
	if (power()==boy.power())
	{
		return true;
	}
	else
	{
		return false;
	}
}

int Boy::operator[](string index)
{
	if (index=="age")
	{
		return age;
	}
	else if (index =="salary")
	{
		return salary;
	}
	else if (index =="darkHourse")
	{
		return darkHorse;
	}
	else if (index =="power")
	{
		return power();
	}
	else
	{
		return -1;
	}
	
}

Boy::operator int() const
{
	return power();
}

Boy::operator char*() const
{
	return name;
}

string Boy::description()
{
	stringstream ret;
	ret << "ID:" << id << "t姓名:" << name << "t年龄:" << age << "t薪资:"
		<< salary << "t黑马系数:" << darkHorse;
	return ret.str();
}

int Boy::power() const
{
	//薪资*黑马系数+（100-年龄）*100
	int value = salary * darkHorse + (NUM - age)*NUM;
	return value;
}

Boy::operator int() const
{
    return power();
}

Boy::operator char*() const
{
    return name;
}

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