Programming Examples

Java program to check whether an input number is a 3 digit number and divisible by three or not


Write a program to check whether an int type number (taken as input) is a 3-digit number divisible by three or not.

Solution

import java.util.*;
class ThreeDigit
{
	public static void main(String arr[])
	{
		int n;
		Scanner sc=new Scanner(System.in);
		System.out.println(“Enter an integer:”);
		n=sc.nextInt();
		if((n>=100 && n<=999 || n>=-999 && n<=-100) && n%3==0)
			System.out.println(“3-digit number divisible by 3”);
		else
			System.out.println(“Not a 3-digit number or divisible by 3”);
	}
}
Output

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