输入某年某月某日，判断这一天是这一年的第几天？ 

  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 }

 

posted @ 2019-05-05 17:10  一个人的姐姐  阅读(550)  评论(4)    收藏  举报