一些常见的运算符重载

来源：互联网发布：数控车床手工编程入门编辑：程序博客网时间：2024/06/05 18:57

#include<iostream>#include<stdio.h>#include<string.h>#include<stdlib.h>#include<malloc.h>using namespace std;class   my_complex{public:void * operator new(size_t size){     void *p = (void *)malloc(size); if(NULL != p) { cout << "operator new rom is sucess!"<< endl; return p; }}void operator delete (void *p){free(p);}public :void   get_data(void ){cout << "real = "<< real<<endl;cout << "virt = "<< virt << endl;}private:     double real; double virt;public:my_complex(){}    my_complex(double x,double y){        real = x;virt = y;}my_complex (my_complex & sd){real = sd.real;virt = sd.virt;}my_complex operator = (my_complex &sd){if(this != &sd){real = sd.real;virt = sd.virt;}return *this;}    ~my_complex(){}};int main(){    my_complex a;char str[10];my_complex::operator new (sizeof(str));return 0;}

运行结果：

operator new rom is sucess!Press any key to continue

<div style="top: 654px;"></div><div style="top: 654px;">输入输出运算符的重载</div><div style="top: 654px;"></div><div style="top: 654px;"></div><div style="top: 654px;">#include<iostream>  #include<stdio.h>#include<stdlib.h></div><div style="top: 654px;">using namespace std;    class value  {  public:                       //构造函数      value()      {          value1=0;          value2=0;      }      value(int v1,int v2)      {          value1=v1;          value2=v2;      }                //重载output      friend ostream &operator<< (ostream &output,const value &sw)      {          output<<"v1="<<sw.value1<<" "<<"v2="<<sw.value2;          return output;      }          //重载input      friend istream &operator>> (istream &input,value &sw)      {          input>>sw.value1>>sw.value2;          return input;      }                private:          int value1;          int value2;  };    int main()  {      value sw1(10,20),sw2(5,8),sw3;        cout<<"Enter sw3:"<<endl;      cin>>sw3;        cout<<"sw1:"<<sw1<<endl;      cout<<"sw2:"<<sw2<<endl;      cout<<"sw3:"<<sw3<<endl;            return 0;  }  </div><div style="top: 654px;"></div>

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