package study01;

import java.util.Scanner;

public class TestDay {

    /*
     * 输入2017年的月和日:month=?,day=? 输出输入的日期是2017年的第几天，使用switch完成
     */
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.print("month=");
        int month = sc.nextInt();

        System.out.print("day=");
        int day = sc.nextInt();

        int days = 0;

        switch (month) {


        case 12:
            days += 30;
        case 11:
            days += 31;
        
        case 10:
            days += 30;
        case 9:
            days += 31;
        case 8:
            days += 31;
        case 7:
            days += 30;
        case 6:
            days += 31;    
        case 5:
            days += 30;
            
        case 4:
            days += 31;
        case 3:
            days += 28;
        case 2:
            days += 31;
        case 1:
            days += day;
        
                
        }

        if(days>365){
            System.out.println("你输入的已经超过了365天了");
        }else{
        System.out.println("第" + days + "天");
        }
    }

}


输出的结果如下：

 month=12
 day=31
 第365天