010：返回什么才好呢 

 1 #include <iostream>
 2 using namespace std;
 3 class A {
 4 public:
 5     int val;
 6 
 7     A(int
 8 i = 123):val(i){};
 9     A& GetObj(){return *this;}
10 };
11 int main()
12 {
13     int m,n;
14     A a;
15     cout << a.val << endl;
16     while(cin >> m >> n) {
17         a.GetObj() = m;
18         cout << a.val << endl;
19         a.GetObj() = A(n);
20         cout << a.val<< endl;
21     }
22     return 0;
23 }

 

posted @ 2022-09-13 22:32  balabalahhh  阅读(15)  评论(0)  编辑  收藏  举报