-2

When I input the value of a, b, and c as 1, the output is "BY USING FORMULA, YOUR ANSWER IS: NaN AND NaN". In this case, I want my output to be "THE EQUATION DOES NOT HAVE ROOTS". what should I do?

import java.util.Scanner;

public class Rumus
{
public static void main(String[]args)
{
  Scanner input=new Scanner(System.in);
  System.out.println("PLEASE ENTER THE VALUE OF A");
  int a =input.nextInt();

  System.out.println("PLEASE ENTER THE VALUE OF B");
  int b=input.nextInt();

  System.out.println("PLEASE ENTER THE VALUE OF C");
  int c=input.nextInt();

  System.out.println("YOUR QUADRATIC EQUATION IS : "+ a +"xx+" +"("+b+")"+"x+" + "("+c+ ")"+ "=0");

  double d=(b*b)-(4*a*c);
  double e=(Math.sqrt(d));
  double f=-(b)+e;
  double rumus=f/(2*a);
  double g=-(b)-e;
  double h=g/(2*a);

  if((a == 0)||(d >= 0))
  {
    System.out.println("THE EQUATION DOES NOT HAVE ROOTS");
  }
  else
  {
    System.out.println("BY USING FORMULA, YOUR ANSWER IS :"+ rumus+" AND "+ h);
  }
    }
}
Desmond Tay
  • 1
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1 Answers1

-1

Just check for NaN before printing:

else if (Double.isNaN(rumus) || Double.isNaN(h)) {
  System.out.println("THE EQUATION DOES NOT HAVE ROOTS");
}
Jorn
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