这一天是这一年的第几天

package Homework;

import java.util.Scanner;

public class J1_1_1 {

public static void main(String[] args) {Scanner sc = new Scanner(System.in);System.out.println("请输入年份");int year = sc.nextInt();System.out.println("请输入月份");int month = sc.nextInt();System.out.println("请输入日份");int day = sc.nextInt();int days = 0;if (((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) && month > 2) days += 1;switch (month - 1) {case 11:days += 30;case 10:days += 31;case 9:days += 30;case 8:days += 31;case 7:days += 31;case 6:days += 30;case 5:days += 31;case 4:days += 30;case 3:days += 31;case 2:days += 28;case 1:days += 31;}days = days + day;System.out.println("这是这一年的第" + days + "天");sc.close();}
}

这一天是这一年的第几天

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