实验1 -- 星座占卜标准答案

根据生日算星座 -- 标准答案

 

 1 #include <iostream>
 2 using namespace std;
 3 
 4 void tellConstellation()
 5 {
 6     // the days of each month
 7     int dayOfMonth[12] =
 8         { 31, 28, 31, 30, 31, 30,
 9           31, 31, 30, 31, 30, 31 };
10     
11     // names of constellation
12     char * names[ 12 ] = 
13     { "白羊座", "金牛座", "双子座", 
14       "巨蟹座", "狮子座", "处女座", 
15       "天秤座", "天蝎座", "射手座",
16       "摩羯座", "水瓶座", "双鱼座" }; 
17 
18     // index of each constellation. 
19     // 0 to 摩羯座, 11 to 射手座
20     // int index;    
21     
22     int month, day; // birthday to be inputted;
23 
24     while ( 1 )
25     {
26         cout << "Please input your birthday (month/day): ";
27         cin >> month >> day;
28         
29         if (month < 1 || month > 12)
30         {
31             cout << " Error month, please input again\n";
32             continue;
33         }
34         if (day < 1 || day > dayOfMonth[month - 1])
35         {
36             cout << " Error day, please input again\n";
37             continue;
38         }
39  // 思考题: 下面这段繁琐的判断，可以简化为1个if-else语句。你想到好办法了吗？
40         if ((month == 3 && day >= 21) || (month == 4 && day <= 20))
41             index = 0;
42         else if ((month == 4 && day >= 21) || (month == 5 && day <= 20))
43             index = 1;
44         else if ((month == 5 && day >= 21) || (month == 6 && day <= 21))
45             index = 2;
46         else if ((month == 6 && day >= 22) || (month == 7 && day <= 22))
47             index = 3;
48         else if ((month == 7 && day >= 23) || (month == 8 && day <= 22))
49             index = 4;
50         else if ((month == 8 && day >= 23) || (month == 9 && day <= 22))
51             index = 5;
52         else if ((month == 9 && day >= 23) || (month == 10 && day <= 22))
53             index = 6;
54         else if ((month == 10 && day >= 23) || (month == 11 && day <= 21))
55             index = 7;
56         else if ((month == 11 && day >= 22) || (month == 12 && day <= 21))
57             index = 8;
58         else if ((month == 12 && day >= 22) || (month == 1 && day <= 19))
59             index = 9;
60         else if ((month == 1 && day >= 20) || (month == 2 && day <= 19))
61             index = 10;
62         else if ((month == 2 && day >= 20) || (month == 3 && day <= 20))
63             index = 11;
64 
65         cout << "你的星座是：" << names[ index ] << endl;
66     }
67 }
 
Hint: the rules above can be represented by an array of integers.