/******************************* MAIN HEADER **********************************
    Title:            Days in Month Calculator (version 2)

    Author:           James D. Skrentny, skrentny@cs.wisc.edu
                      copyright 2009-2012 all rights reserved
    Course:           CS302, Lectures 1 & 2
 **************************** 80 columns wide *********************************/

import java.util.Scanner;

/**
 * This code sample demonstrates good and bad style with switch statements.
 *
 * Bugs: None known 
 **/

public class DaysInMonthCalculator2 {

	public static void main(String[] args) {

		//Use input to make our program GENERAL.
		Scanner stdIn = new Scanner(System.in);
		int month;

		//Use clear prompts to make our program USER-FRIENDLY.
		System.out.print("Please enter a month [1-12]: ");
		month = stdIn.nextInt();

		// PASTE EXAMPLES HERE


	}
}

/* 
 
		//EXAMPLE 1A:
		//***********
		//Doesn't WORK and very poor STRUCTURE.
		//-->Can you determine why?
		
		switch (month) {
			case 1:  System.out.println(month + " is a 31 day month.");
			case 2:  System.out.println(month + " is usually a 28 day month.");
			case 3:  System.out.println(month + " is a 31 day month.");
			case 4:  System.out.println(month + " is a 30 day month.");
			case 5:  System.out.println(month + " is a 31 day month.");
			case 6:  System.out.println(month + " is a 30 day month.");
			case 7:  System.out.println(month + " is a 31 day month.");
			case 8:  System.out.println(month + " is a 31 day month.");
			case 9:  System.out.println(month + " is a 30 day month.");
			case 10: System.out.println(month + " is a 31 day month.");
			case 11: System.out.println(month + " is a 30 day month.");
			case 12: System.out.println(month + " is a 31 day month.");
		} //end switch


		//EXAMPLE 1B:
		//***********
		//WORKS BUT still very poor STRUCTURE.

		switch (month) {
			case 1:  System.out.println(month + " is a 31 day month."); break;
			case 2:  System.out.println(month + " is usually a 28 day month."); break;
			case 3:  System.out.println(month + " is a 31 day month."); break;
			case 4:  System.out.println(month + " is a 30 day month."); break;
			case 5:  System.out.println(month + " is a 31 day month."); break;
			case 6:  System.out.println(month + " is a 30 day month."); break;
			case 7:  System.out.println(month + " is a 31 day month."); break;
			case 8:  System.out.println(month + " is a 31 day month."); break;
			case 9:  System.out.println(month + " is a 30 day month."); break;
			case 10: System.out.println(month + " is a 31 day month."); break;
			case 11: System.out.println(month + " is a 30 day month."); break;
			case 12: System.out.println(month + " is a 31 day month."); break;
		} //end switch



		//EXAMPLE 2A:
		//***********
		//Doesn't WORK! Invalid way to combine cases!
		
		switch (month) {
			case 1,3,5,7,8,10,12: System.out.println(month + " is a 31 day month.");
			case 4,6,9,11: System.out.println(month + " is a 30 day month.");
			case 2:  System.out.println(month + " is usually a 28 day month.");
			default: System.out.println(month + " is invalid.");
		} //end switch


		//EXAMPLE 2B:
		//***********
		//Doesn't WORK! Another invalid way to combine cases!
		
		switch (month) {
			case 1 || 3 || 5 || 7 || 8 || 10 || 12: System.out.println(month + " is a 31 day month.");
			case 4 || 6 || 9 || 11: System.out.println(month + " is a 30 day month.");
			case 2:  System.out.println(month + " is usually a 28 day month.");
			default: System.out.println(month + " is invalid.");
		} //end switch


		//YOU ALSO CANNOT USE relational operators such as < > <= >=
		//as in this unrelated but code example:
		
		switch (month) {
			case >= 1 && <= 6: System.out.println(month + " is in the first half of the year.");
			case >= 7 && <=12: System.out.println(month + " is in the last half of the year.");
			default: System.out.println(month + " is invalid.");
		} //end switch


 
 		//EXAMPLE 3A:
		//***********
		//WORKS but can still be improved!
		//-->Can you determine how?

		switch (month) {
			case 1:
			case 3:
			case 5:
			case 7:
			case 8:
			case 10:
			case 12: System.out.println(month + " is a 31 day month."); break;
			case 4:
			case 6:
			case 9:
			case 11: System.out.println(month + " is a 30 day month."); break;
			case 2:  System.out.println(month + " is usually a 28 day month."); break;
		} //end switch
		// Note: putting break on last case is good style


		//EXAMPLE 3B:
		//***********
		//Improvement: Make code more ROBUST by adding invalid month case.

			default: System.out.println(month + " is invalid."); break;



 		//EXAMPLE 4:
		//***********
		//WORKS and more compact but not as readable as above example

		switch (month) {
			case 1: case 3: case 5: case 7: case 8: case 10:
			case 12: System.out.println(month + " is a 31 day month."); break;
			case 4: case 6: case 9:
			case 11: System.out.println(month + " is a 30 day month."); break;
			case 2:  System.out.println(month + " is usually a 28 day month."); break;
			default: System.out.println(month + " is invalid."); break;
		} //end switch

*/