“三天打鱼两天晒网”，某人从1990年1月1日起开始“三天打鱼两天晒网”。问这个人...

蜗牛你慢点

1. #include<stdio.h>
   
2. long y_tianshu(int y);
   
3. int n_tianshu(int y, int n);
   
4. int T(int y, int n,int d);
   
5. 
   
6. long y_tianshu(int y)//计算当年之前的天数
   
7. {
   
8. 
   
9. long a=0;
   
10. 
    
11. if (y == 1990) a = 0;
    
12. 
    
13. else if (y == 1991) a = 365;
    
14. 
    
15. else if (y == 1992) a = 365 * 2;
    
16. 
    
17. else if (y == 1993) a = 365 * 2 + 366;
    
18. 
    
19. else if (y > 1993 && y < 1997)
    
20. 
    
21. a = 365 * 2 + 366 + (y - 1993) * 365;
    
22. 
    
23. else if (y >= 1997)
    
24. 
    
25. a = 365 * 2 + 366 + (y - 1993) * 365 + (y - 1993) / 4;
    
26. 
    
27. return a;
    
28. }
    
29. 
    
30. int n_tianshu(int y, int n)//计算在本年，当月之前的天数
    
31. {
    
32. int s; int b=0;
    
33. for (int a = 1; a <= n - 1; a++)
    
34. {
    
35. 
    
36.     switch (a)//根据月份判断天数
    
37.     {
    
38. 
    
39.     case 1:s = 31; break; case 2:s = 28; break;
    
40. 
    
41.     case 3:s = 31; break; case 4:s = 30; break;
    
42.    
    
43.     case 5:s = 31; break; case 6:s = 30; break;
    
44. 
    
45.     case 7:s = 31; break; case 8:s = 31; break;
    
46. 
    
47.     case 9:s = 30; break; case 10:s = 31; break;
    
48. 
    
49.     case 11:s = 30; break; case 12:s = 31; break;
    
50.     }
    
51. 
    
52.     if (a == 2)//判断闰年2月差异
    
53.     {
    
54.         if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0)
    
55.         s = 29;
    
56. 
    
57.         else
    
58.         s = 28;
    
59.     }
    
60. 
    
61.     b = b + s;
    
62. }
    
63. return b;
    
64. }
    
65. 
    
66. int T(int y, int n,int d)//判断输入的月份的天数是否正确
    
67. {
    
68. int s=0;
    
69. 
    
70. switch (n)//根据月份判断天数
    
71. {
    
72. case 1:s = 31; break; case 2:s = 28; break;
    
73. 
    
74. case 3:s = 31; break; case 4:s = 30; break;
    
75. 
    
76. case 5:s = 31; break; case 6:s = 30; break;
    
77. 
    
78. case 7:s = 31; break; case 8:s = 31; break;
    
79. 
    
80. case 9:s = 30; break; case 10:s = 31; break;
    
81. 
    
82. case 11:s = 30; break; case 12:s = 31; break;
    
83. }
    
84. 
    
85. if (n == 2)//判断闰年2月差异
    
86. {
    
87.     if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0)
    
88.     s = 29;
    
89. 
    
90.     else
    
91.     s = 28;
    
92. }
    
93. 
    
94. if (d <= s) return 0;
    
95. else return 1;
    
96. }
    
97. 
    
98. void main()
    
99. {
    
100. 
     
101. int y, n, d;
     
102. 
     
103. while (1)
     
104. {
     
105.     scanf_s("%d-%d-%d", &y, &n, &d);//输入时间
     
106.    
     
107.     while (y <= 0 || n <= 0 || d <= 0 || y < 1990||T(y, n, d)||n>12)
     
108. 
     
109.     {    //控制输入的数据为正,并且在1990之后
     
110.         //控制相应月份对应所具有的相应天数
     
111. 
     
112.         printf("input error!please re-input:\n");
     
113.    
     
114.         scanf_s("%d-%d-%d", &y, &n, &d);
     
115. 
     
116.     }
     
117. 
     
118.     long a = y_tianshu(y) + n_tianshu(y, n) + d;
     
119.     a = a % 5;
     
120. 
     
121.     if (a <= 3&&a>0) printf("他在打鱼\n");//利用总日子除以5的余数判断
     
122.     else printf("他在晒网\n");
     
123. }
     
124. }

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