/*
    MultiwayBranch5.java
    CIS 160
    David G. Klick
    2007-09-25
 
    Demonstrates switch statement with fall-through
    (purposefully missing 'break' statements). This
    version takes leap years into account. No checking
    is done to see if the year is valid, so the user
    could enter a value like -50.
*/
import java.util.Scanner;

public class MultiwayBranch5 {
    public static void main(String[] args) {
        int days = 0;
        
        Scanner kbd = new Scanner(System.in);
        System.out.print("What month number is it? ");
        int month = kbd.nextInt();
        System.out.print("What year is it? ");
        int year = kbd.nextInt();
        
        System.out.print(month + "/" + year + " has ");
        switch (month) {
            case  1: 
            case  3: 
            case  5: 
            case  7: 
            case  8: 
            case  10: 
            case  12: 
                days = 31;
                break;
            case  4: 
            case  6: 
            case  9: 
            case 11: 
                days = 30;
                break;
            case  2:
                if ( ((year % 4 == 0) && !(year % 100 == 0))
                    || (year % 400 == 0)) {
                        days = 29;
                } else {
                    days = 28;
                }
                break;
            default: System.out.println("*Invalid month specified*");
        }
        if (days > 0) {
           System.out.println(days + " days");
        }
    }
}