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Thread: Zellar's Congruence error

  1. #1
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    Default Zellar's Congruence error

    Hello everyone, so I'm brand new to java (3 weeks of instruction) I think I'm close on this formula(Zellar's Congruence), but I'm getting "error: cannot find symbol" on line 33 when I attempt to compile, I've re-written the formula a couple times and am continuing to get this error. Any help or insight would be much appreciated. Thanks

    import java.util.Scanner;
    public class Project1_3_7 {
     
        public static void main(String[] args) {
        	Scanner scanner = new Scanner (System.in);
     
    		final String[] DAY_OF_WEEK = {"Saturday", "Sunday", "Monday",
    			"Tuesday", "Wednesday", "Thursday", "Friday"};
     
        	System.out.print("Enter year: (e.g, 2012): ");
        	int year = scanner.nextInt();
     
        	System.out.print("Enter Month: 1-12: ");
        	int month = scanner.nextInt();
     
        	System.out.print("Enter the day of the month: 1-31: ");
        	int dayOfMonth = scanner.nextInt();
     
        	if (month == 1)
        		month = 13;
        	else if (month == 2)
        		month = 14;
     
        	int century 	  = year / 100;
        	int yearOfCentury = year % 100;
     
        	int dayOfWeek = (day + ((26*(month + 1)) / 10) +
        		yearOfCentury + (yearOfCentury / 4) + (century / 4) +
        		(5 * century)) % 7;
     
        	int answer = (int)dayOfWeek;
     
        	System.out.println("Day of the week is " + DAY_OF_WEEK[answer]);
     
        }
    }


  2. #2
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    Default Re: Zellar's Congruence error

    I figured it out, just a stupid mistake that I think stemmed from me working on this too long...

    int dayOfWeek =(dayOfMonth +((26*(month + 1)) / 10) +
        		yearOfCentury + (yearOfCentury / 4) + (century / 4) +
        		(5 * century)) % 7;

    I managed to mix up what variable i used for the "dayOfMonth"...

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