Roots of quadratic equation

Roots of quadratic equation

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Write a program to calculate the roots of a given quadratic equation -

      a(x^2) + bx + c = 0 

Print roots specifying their nature. If roots are imaginary, no need to print the roots.

Print the nature of roots in the form of an integer -

 0 : if roots are real & same
 1 : if roots are real & different
-1 : if roots are imaginary

Round off the roots and then print the integral part only i.e. without any decimal places.

You can assume that, input will always be a quadratic equation.

Input format :

a b c (separated by space)

Output format :

Line 1 : Nature of roots (0 or 1 or -1)
Line 2 : Root 1 and Root 2 (separated by space)

Sample Input 1 :

1 4 2

Sample Output 1 :

1
-1 -3

Sample Input 2 :

1 2 3

Sample Output 2 :

-1

2. import java.util.Scanner;
3. public class Main
4. {
6. public static void main(String[] args) 
7. {
8. Scanner s = new Scanner (System.in);
10. // System.out.println("enter the values a,b and c");
11. int a = s.nextInt();
12. int b = s.nextInt();
13. int c = s.nextInt();
15. double r1=0;
16. double r2=0;
17. int temp = b*b-4*a*c;
19. r1 = (-b + Math.sqrt(temp)) / (2 * a);
20. r2 = (-b - Math.sqrt(temp)) / (2 * a);
22. if (temp<0)
23. {
24. System.out.println(-1);
25. }
26. else if(temp>0)
27. {
28. System.out.println(1);
29. }
30. else
31. {
32. System.out.println(0);
33. }
34. 
    
35. System.out.println();
36. System.out.print(Math.round (r1)+" ");
37. System.out.print(Math.round(r2));
40. 
    
41. }
42. }