12-1.cpp

来自「一、教学目的： 能理解C++中运算符重载的需要性」· C++ 代码 · 共 39 行

#include<iostream.h>
class MyClass
{
 public:
  MyClass();
  MyClass(int);
  ~MyClass();
  void Display();
 protected:
  int number;
};

MyClass::MyClass()
{
 cout<<"Constructing normally\n";
}
MyClass::MyClass(int m)
{
 number=m;
 cout<<"Constructing with a number:"<<number<<endl;
}
void MyClass::Display()
{
 cout<<"Display a number:"<<number<<endl;
}
MyClass::~MyClass()
{
 cout<<"Destructing\n";
}
void main()
{
 MyClass obj1;
 MyClass obj2(20);
 obj1.Display();
 obj2.Display();
}