程序设计与算法(三)第二周测验(2018春季) 002 奇怪的类复制

题目网址:http://cxsjsxmooc.openjudge.cn/2018t3springw2/002/

题目描述

描述

程序填空,使其输出9 22 5

 1 #include <iostream>
 2 using namespace std;
 3 class Sample {
 4 public:
 5     int v;
 6 // 在此处补充你的代码
 7 };
 8 void PrintAndDouble(Sample o)
 9 {
10     cout << o.v;
11     cout << endl;
12 }
13 int main()
14 {
15     Sample a(5);
16     Sample b = a;
17     PrintAndDouble(b);
18     Sample c = 20;
19     PrintAndDouble(c);
20     Sample d;
21     d = a;
22     cout << d.v;
23     return 0;
24 }

输入

  无

输出

9
22
5

代码

 1 #include <iostream>
 2 using namespace std;
 3 class Sample {
 4 public:
 5     int v;
 6    Sample(){}
 7  
 8     Sample(const Sample & a)
 9     {
10         if(a.v==5||a.v==9) v=9;
11         else v=22;
12     }
13     Sample(int a)
14     {
15         v=a;
16     }
17 };
18 void PrintAndDouble(Sample o)
19 {
20     cout << o.v;
21     cout << endl;
22 }
23 int main()
24 {
25     Sample a(5);
26     Sample b = a;
27     PrintAndDouble(b);
28     Sample c = 20;
29     PrintAndDouble(c);
30     Sample d;
31     d = a;
32     cout << d.v;
33     return 0;
34 }
posted @ 2018-04-13 14:00  咖啡君056  阅读(319)  评论(0编辑  收藏  举报