1 #include <iostream>
2 #include <string>
3 using namespace std;
4 int main(){
5 cout<<"请输入一个日期："<<endl;
6 int a;
7 cin>>a;
8 bool hehe=false;
9 if (99999999<a&&a<10000000)
10 {
11 hehe=true;
12 }
13 while(hehe)
14 {
15 cout<<"输入的日期位数不够或者超出！请重新输入："<<endl;
16 cin>>a;
17 if (99999999<a&&a<10000000)
18 {
19 hehe=true;
20 }
21 else
22 {
23 hehe=false;
24 }
25 }
26 int day;
27 day=a%10;
28 int c;
29 c=a/10%10;
30 day=day+(c*10);
31 c=a/100%10;
32 int month;
33 month=a/1000%10;
34 month=(month*10)+c;
35 c=a/10000%10;
36 int year;
37 year=c;
38 c=a/100000%10;
39 year=year+(c*10);
40 c=a/1000000%10;
41 year=year+(c*100);
42 c=a/10000000%10;
43 year=year+(c*1000);
44 if(year<1000)
45 {
46 cout<<"输入年份错误！"<<endl;
47 return 0;
48 }
49
50 if(month>12)
51 {
52 cout<<"输入月份错误！"<<endl;
53 return 0;
54 }
55 if (day>31)
56 {
57 cout<<"输入日期错误！"<<endl;
58 return 0;
59 }
60 int max=0;
61 if((year%4==0&&year%100!=0)||(year%400==0))
62 {
63 cout<<"您的日期是闰年！"<<endl;
64 switch(month)
65 {
66 case 1:max=day;break;
67 case 2:max=day+29;break;
68 case 3:max=day+31+29;break;
69 case 4:max=day+(31*2)+29;break;
70 case 5:max=day+(31*2)+29+30;break;
71 case 6:max=day+(31*3)+29+30;break;
72 case 7:max=day+(31*3)+29+(30*2);break;
73 case 8:max=day+(31*4)+29+(30*2);break;
74 case 9:max=day+(31*5)+29+(30*2);break;
75 case 10:max=day+(31*5)+29+(30*3);break;
76 case 11:max=day+(31*6)+29+(30*3);break;
77 case 12:max=day+(31*6)+29+(30*4);break;
78 }
79 }
80 else
81 {
82 cout<<"您的日期不是闰年！"<<endl;
83 switch(month)
84 {
85 case 1:max=day;break;
86 case 2:max=day+28;break;
87 case 3:max=day+31+28;break;
88 case 4:max=day+(31*2)+28;break;
89 case 5:max=day+(31*2)+28+30;break;
90 case 6:max=day+(31*3)+28+30;break;
91 case 7:max=day+(31*3)+28+(30*2);break;
92 case 8:max=day+(31*4)+28+(30*2);break;
93 case 9:max=day+(31*5)+28+(30*2);break;
94 case 10:max=day+(31*5)+28+(30*3);break;
95 case 11:max=day+(31*6)+28+(30*3);break;
96 case 12:max=day+(31*6)+28+(30*4);break;
97 }
98 }
99 cout<<"您输入的日期是今年的第："<<max<<"天。"<<endl;
100 }
