Java判断闰年平年

 

 

 

 

 

 

 

 

package leap;
import java.util.Scanner;
public class Leap {
public static void main(String args[])
  {
    int year;         //年
    int month;        //月
    int day = 0;          //日
    boolean  flag;       //判断标志
    System.out.print("请依次输入年和月："+'\n');
    Scanner sc=new Scanner(System.in);
    year=sc.nextInt();
    month=sc.nextInt();
    if(year%400==0||(year%4==0&&year%100!=0))
    {
      flag=true;
      System.out.println(year+"年是闰年！");
    }

    else {
      flag=false;
      System.out.println(year+"年是平年！"); 
    }
    if(flag==true)
    {
      switch(month)
      {
      case 1:
        day=31;
        break;
      case 2:
        day=29;
        break;
      case 3:
        day=31;
        break;
      case 4:
        day=30;
        break;
      case 5:
        day=31;
        break;
      case 6:
        day=30;
        break;
      case 7:
      case 8:
        day=31;
        break;
      case 9:
        day=30;
        break;
      case 10 :
        day=31;
        break;
      case 11:
        day=30;
        break;
      case 12:
        day=31;
        break;
      }
      System.out.println("且"+year+"年的"+month+"月有"+day+"天");
    }
    else
    {
      switch(month)
      {
      case 1:
        day=31;
        break;
      case 2:
        day=28;
        break;
      case 3:
        day=31;
        break;
      case 4:
        day=30;
        break;
      case 5:
        day=31;
        break;
      case 6:
        day=30;
        break;
      case 7:
      case 8:
        day=31;
        break;
      case 9:
        day=30;
        break;
      case 10 :
        day=31;
        break;
      case 11:
        day=30;
        break;
      case 12:
        day=31;
        break;
      }
      System.out.println("且"+year+"年的"+month+"月有"+day+"天");
    } 
  }
}

作者：​​靠谱杨​​​

我可能不是天才，但我会努力成为人才。

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