CODEWITHSUNDEEP
java
user2832850
user2832850

Reputation:

operator is undefined for args

I keep getting the error message the operator type is undefined for the args when I use any boolean operators in java. Do I have to import a boolean class or something?

import java.util.Scanner; //imports Scanner class 

public class LeapYear {
    public static void main (String[] args) {

        //create Scanner object
        Scanner input  = new Scanner(System.in);

        //declare variables
        int year;

        //get input
        System.out.println("Enter year: ");
        year = input.nextInt();

        //create if statement   
            if ((year/4) && !(year/100)){
                System.out.println("Leap Year");
            }
            else{
                System.out.println("Not a Leap Year");
            }
    }


}

Upvotes: 0

Views: 87

Answers (3)

KhAn SaAb
KhAn SaAb

Reputation: 5376

try this instead of division "/" use mode "%".

if ((year % 4 == 0) && (year % 100 != 0)) {

Upvotes: 0

Michael Hoyle
Michael Hoyle

Reputation: 239

(year/4) && !(year/100)

Neither of these integer operations equate to booleans. You might want to try something like:

if(year%4 == 0)

or something along those lines. I know the leap-year logic isn't perfect there, but the point is you need to be making some sort of comparison (==).

Upvotes: 0

rgettman
rgettman

Reputation: 178283

Unlike C/C++, you cannot treat int values as booleans. You must explicitly compare them to zero to create the boolean result. Additionally, for leap year calculations, you want to compare the remainder when dividing, so us % instead of /:

if ((year % 4 == 0) && (year % 100 != 0)) {

Don't forget about years divisible by 400, which are leap years. I'll leave that change to you.

Upvotes: 4

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