作业1.zip

package Text2; import java.util.Scanner; public class Text2 { public static void main(String[] args) { // TODO Auto-generated method stub int year,month,num=0; System.out.print("请输入一个4位数的年份和1~12之间的月份:"); do { num=0; //输入 Scanner scanner = new Scanner(System.in); year = scanner.nextInt(); month = scanner.nextInt(); //判定 boolean a = (year%4==0&&year%100!=0||year%400==0); switch(month) { case 1: System.out.println("31 days"); scanner.close(); break; case 2: if(a) { System.out.println("29 days"); scanner.close(); } else { System.out.println("28 days"); scanner.close(); } break; case 3: System.out.println("31 days"); scanner.close(); break; case 4: System.out.println("30 days"); scanner.close(); break; case 5: System.out.println("31 days"); scanner.close(); break; case 6: System.out.println("30 days"); scanner.close(); break; case 7: System.out.println("31 days"); scanner.close(); break; case 8: System.out.println("31 days"); scanner.close(); break; case 9: System.out.println("30 days"); scanner.close(); break; case 10: System.out.println("31 days"); scanner.close(); break; case 11: System.out.println("30 days"); scanner.close(); break; case 12: System.out.println("31 days"); scanner.close(); break; default: System.out.println("你输入的数据有误！请重输!"); num=1; } }while(num==1); } }