#include "stdafx.h"
#include <iostream>class TDPoint//三维坐标
{
private:
int x;
int y;
int z;
public:TDPoint(int x=0,int y=0,int z=0){
this->x=x;
this->y=y;
this->z=z;}TDPoint operator++();//成员函数重载前置运算符++TDPoint operator++(int);//成员函数重载后置运算符++friend TDPoint operator++(TDPoint& point);//友元函数重载前置运算符++friend TDPoint operator++(TDPoint& point,int);//友元函数重载后置运算符++
void showPoint();
};TDPoint TDPoint::operator++()
{
++this->x;
++this->y;
++this->z;
return*this;//返回自增后的对象
}TDPoint TDPoint::operator++(int)
{TDPoint point(*this);
this->x++;
this->y++;
this->z++;
return point;//返回自增前的对象
}TDPoint operator++(TDPoint& point)
{
++point.x;
++point.y;
++point.z;
return point;//返回自增后的对象
}TDPoint operator++(TDPoint& point,int)
{TDPoint point1(point);point.x++;point.y++;point.z++;
return point1;//返回自增前的对象
}void TDPoint::showPoint()
{std::cout<<"("<<x<<","<<y<<","<<z<<")"<<std::endl;
}int main()
{TDPoint point(1,1,1);point.operator++();//或++pointpoint.showPoint();//前置++运算结果
point=point.operator++(0);//或point=point++point.showPoint();//后置++运算结果operator++(point);//或++point;point.showPoint();//前置++运算结果
point=operator++(point,0);//或point=point++;point.showPoint();//后置++运算结果

return0;
}

#include "stdafx.h"
#include <iostream>int main()
{int a=10;std::cout<<"a="<<a<<std::endl;//运算符"<<"重载后用于输出a=a>>2;//右移运算符std::cout<<"右移2位：a="<<a<<std::endl;std::cout<<"请输入一个整数a:";std::cin>>a;//运算符">>"重载后用于输入a=a<<2;//左移运算符std::cout<<"左移2位：a="<<a<<std::endl;return0;
}

#include "stdafx.h"
#include <iostream>class Complex //复数类
{private://私有
double real;//实数
double imag;//虚数
public:Complex(double real=0,double imag=0){this->real=real;this->imag=imag;}friend std::ostream&operator<<(std::ostream& o,Complex& com);//友元函数重载提取运算符"<<"friend std::istream&operator>>(std::istream& i,Complex& com);//友元函数重载插入运算符">>"
};std::ostream&operator<<(std::ostream& o,Complex& com)
{std::cout<<"输入的复数:";o<<com.real;if(com.imag>0)o<<"+";if(com.imag!=0)o<<com.imag<<"i"<<std::endl;return o;
}std::istream&operator>>(std::istream& i,Complex& com)
{std::cout<<"请输入一个复数:"<<std::endl;std::cout<<"real(实数):";i>>com.real;std::cout<<"imag(虚数):";i>>com.imag;return i;
}int main()
{Complex com;std::cin>>com;std::cout<<com;return0;
}