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Java program that prints all real solutions to the quadratic equation ax2+bx+c=0

Friday, October 2nd, 2009

Write a Java program that prints all real solutions to the quadratic equation ax2+bx+c=0. Read in a,b,c and use the quadratic formula.If the discriminant b2-4ac is negative, display a message stating that there are no real roots.

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import java.util.Scanner;
 class solutions
{
	public static void main(String[] args)
	{
		int a,b,c;
		double x,y;
		Scanner s=new Scanner(System.in);
		System.out.println(“Enter the values of a,b, and c”);
		a=s.nextInt();
		b=s.nextInt();
		c=s.nextInt();
		int k=(b*b)-4*a*c;
		if(k<0)
		{
			System.out.println(“No real roots”);
		}
		else
		{
			double l=Math.sqrt(k);
			x=(-b-l)/2*a;
			y=(-b+l)/2*a;
			System.out.println(“Roots of given equation:”+x+” “+y);
		}
	}
}

Output:

Enter the values of a,b,c
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5
6
Roots of given equation:-3.0 -2.0

Enter the values of a, b, c
1
2
2
No real solutions

Enter the values of a, b, c
1
3
2
Roots of given equation: -2.0 -1.0

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Author Name :
Ranjith

Total : 4 Comments

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4 Responses to “Java program that prints all real solutions to the quadratic equation ax2+bx+c=0”

  1. jenita says:
    March 28, 2011 at 7:34 pm

    ….hello again….

    hats off to u 4 publishing sumthin wich i really cant understand…i really dnt knw wat kind of thing u r
    using….in d program…!!!!

    plz make changes so dat student lik me can understand

    …………plz………

  2. ruchi says:
    February 12, 2012 at 11:15 am

    Thanx alott.. keep posting such useful programs :)

  3. ruchi says:
    February 12, 2012 at 11:15 am

    Thanx alott.. keep posting such useful programs :)

  4. akinwale emmanuel says:
    May 3, 2012 at 4:58 pm

    tnks 4 d program.

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