运算符重载的问题，求助
#include "iostream"using namespace std;
class Counter
{
public:
Counter(){value=0;}
Counter(int i){value=i;}
Counter operator++();
Counter operator++(int);
Counter operator--();
Counter operator--(int);
void display() {cout<<value<<endl;}
private:
unsigned value;
};
Counter Counter::operator++()
{
value++;
return*this; //这个是什么意思？*this 是指哪个？
}
Counter Counter::operator++(int)
{
Counter temp;
temp.value=value++;
return temp;
}
Counter Counter::operator--()
{
value--;
return*this;
}
Counter Counter::operator--(int)
{
Counter temp;
temp.value=value--;
return temp;
}
int main()
{
Counter n(10),c;
c=++n;
cout<<"前缀++运算符计算结果:"<<endl;
cout<<"n=",n.display();
cout<<"c=",c.display();
c=n++;
cout<<"后缀++运算符计算结果:"<<endl;
cout<<"n=",n.display();
cout<<"c=",c.display();
c=--n;
cout<<"前缀--运算符计算结果:"<<endl;
cout<<"n=",n.display();
cout<<"c=",c.display();
c=n--;
cout<<"后缀--运算符计算结果:"<<endl;
cout<<"n=",n.display();
cout<<"c=",c.display();
return 0;
}
