输入某年某月某日，判断这一天是这一年的第几天？

不念不忘少年蓝@ 2021-11-10 02:12 353阅读 0赞

1 import java.util.*;
      2 public class work_1 {
      3 
      4     public static void main(String[] args) {
      5         System.out.println("请输入年份");
      6         Scanner a=new Scanner(System.in);
      7         int year=a.nextInt();
      8         System.out.println("请输入月份");
      9         Scanner b=new Scanner(System.in);
     10         int month=b.nextInt();
     11         int sum = 0;
     12         int x;
     13         if(year%4==0&&year%100!=0||year%400==0) {
        //判断是否为闰年
     14             System.out.println("该年为闰年，有366天");
     15             switch(month) {
     16                 case 1:
     17                     sum=0;
     18                     break;
     19                 case 2:
     20                     sum=32;
     21                     break;
     22                 case 3:
     23                     sum=60;
     24                     break;
     25                 case 4:
     26                     sum=91;
     27                     break;
     28                 case 5:
     29                     sum=121;
     30                     break;
     31                 case 6:
     32                     sum=152;
     33                     break;
     34                 case 7:
     35                     sum=182;
     36                     break;
     37                 case 8:
     38                     sum=213;
     39                     break;
     40                 case 9:
     41                     sum=244;
     42                     break;
     43                 case 10:
     44                     sum=274;
     45                     break;
     46                 case 11:
     47                     sum=305;
     48                     break;
     49                 case 12:
     50                     sum=335;
     51                     break;
     52             }
     53         }else {
     54             System.out.println("该年不为闰年，有365天");
     55             switch(month) {
     56             case 1:
     57                 sum=0;
     58                 break;
     59             case 2:
     60                 sum=31;
     61                 break;
     62             case 3:
     63                 sum=59;
     64                 break;
     65             case 4:
     66                 sum=90;
     67                 break;
     68             case 5:
     69                 sum=120;
     70                 break;
     71             case 6:
     72                 sum=151;
     73                 break;
     74             case 7:
     75                 sum=181;
     76                 break;
     77             case 8:
     78                 sum=212;
     79                 break;
     80             case 9:
     81                 sum=243;
     82                 break;
     83             case 10:
     84                 sum=273;
     85                 break;
     86             case 11:
     87                 sum=304;
     88                 break;
     89             case 12:
     90                 sum=334;
     91                 break;
     92         }
     93         }
     94         System.out.println("请输入日子");
     95         int day=a.nextInt();
     96         x=sum+day;
     97         System.out.println("该日子为这一年的第"+x+"天");
     98     }
     99 
    100 }

转载于:https://www.cnblogs.com/TuTu-winer/p/10814831.html