Felix021

C++重载operator的示例 By Felix021

以下示例中定义了一个class test, 重载了<, +, +=, =, ==, <<, >>等符号:

Overload operator <<

felix写的一个简单例子：
#include <iostream>
using namespace std;
class testclass{
public:
  int a, b;
  testclass(int a1, int b1){
    a = a1, b = b1;
  }
  
  friend ostream & operator <<(ostream & os, testclass a1){
    cout << "a = " << a1.a << ", b = " << a1.b << endl;
    return os;
  }
  
  friend ostream & operator <<(ostream & os, testclass *a1){
    cout << "a = " << a1->a << ", b = " << a1->b << endl;
    return os;
  }
};//end of testclass

int main(){
  testclass *a1 = new testclass(1, 2);
  cout << a1;
  cout << *a1;
  getchar();
  return 0;
}

下面是更详细的重载各个流操作符的例子，原出处是Thinking In C++
copy 自 http://www.cndev.org/forum/msg.aspx?pid=233806