陳銘憲計程考古題code 4

[wanderer (靜心)]

#include <iostream.h>
#include <stdlib.h>
class MyInt{
   friend ostream& operator <<(ostream& os, const MyInt& x);
private:
   int data;
public:
   MyInt(int value=0){
      data = value;
      cout<<"MyInt:"<<data<<endl;
   }
   ~MyInt(){
      cout<<"~MyInt:"<<data<<endl;
   }
   MyInt(const MyInt& b){
      data = b.data-1;
      cout<<"MyInt(const MyInt&)"<<data<<endl;
   }
   MyInt& operator=(MyInt& b){
      int temp = data;
      data=b.data; b.data = temp;
      return b;
   }
   operator int(){return data+1;}
};
ostream& operator<<(ostream& os, const MyInt& x}{
   return os<<x.data-1;
}

int main()
{
   MyInt a(17),b=10,c=a,d;
   (b=a)=(d=c);
   cout<<a<<","<<(int)b<<","<<(int)c<<","<<d<<endl;
      return 0;
}

--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 61.216.80.233