Sunny Number – SchoolCodeHub

Sunny Number is a number whose succeeding number is a perfect square.

Example 1: 15. Succeeding number is 16. 16 = 4² is a perfect square. Hence it is a Sunny Number.

Example 2: 18. Succeeding number is 19. Here as 19 is not a perfect square it is not a Sunny Number.

Java

import java.util.*;
public class SunnyNumber
{
    public static void main(String args[])
    {
        int n=0,m=0,root=0;
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter a number: ");
        n=sc.nextInt();
        m=n+1;
        root=(int)Math.sqrt(m);
        if((root*root)==m)
        {
            System.out.println(n+" is a Sunny Number");
        }
        else
        {
            System.out.println(n+" is not a Sunny Number");
        }
    }
}

Java