Question

WAP in JAVA to check whether a number is pronic or not !

A pronic number is n * ( n + 1 ) = number


Fast please

Answer 1

CODE :

import java.util.*;

class pronic_number

{

public static void main(String args[ ])

{

Scanner sc=new Scanner(System.in);

System.out.println("Enter a number to check whether it is pronic number or not");

int n=sc.nextInt();

int flag=0;

for(int i=1;i<=n;i++)

{

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

{

flag=1;

break;

}

}

if(flag==0)

{

System.out.println(n+" is not a pronic number");

}

if(flag==1)

{

System.out.println(n+" is a pronic number");

}

}

}

OUTPUT :

pronic_n1.main();

Enter a number to check whether it is pronic number or not

72

72 is a pronic number

Hope it helps :-)

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Answer 2

Java Code:

import java.util.Scanner;
public static void main(String args[])
{
Scanner sc = new Scanner(System.in);
System.out.print("Input a number : ");
int num = sc.nextInt();
int ans = 0;

for(int i=0; i<num; i++)
{
if(i*(i+1) == num)
{
ans = 1;
break;
}
}

if(ans == 1)
System.out.println("Pronic Number.");
else
System.out.println("Not a Pronic .");
}
}