Question

Write a java program to input and check whether the number is a pronic no. or not.

Answer 1

class pronic
{
public static void main(String args [])
{
Scanner sc = new Scanner( System.in);
System.out.println("Enter a number");
int n,i
n= sc.nextInt();
for(i=1;i<n;i++)

if(i*(i+1)==n)
{i=0;break}
if(i==0)
System.out.println("pronic number");
else
System.out.println("not a pronic number.");
}}

Answer 2

• A pronic number is a type of number which is a product of any two consecutive integers.

import java.util.Scanner;

public class PronicNumber

{

   public static void main(String args[])

   {

       Scanner obj=new Scanner(System.in);

       System.out.println("Enter a number.");

       int n=obj.nextInt();

       for(int i=1;i<=n;i++)

       {

           if(n%i==0)

           {

               if((i+1)*i==n||(i-1)*i==n)

               {

                   System.out.println("Entered number is Pronic.");

                   break;

               }

               else    

               {

                   System.out.println("No, the number is not Pronic.");

                   break;

               }

           }            

       }

   }

}