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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main(void) {
  5. 	//Let the quadratic equation be ax^2 + bx + c = 0
  6. 	float a,b,c,root1,root2,discriminant;
  7. 	printf("Enter coefficients a, b and c: ");
  8. 	scanf("%f %f %f", &a, &b, &c);
  9.  
  10. 	discriminant = b*b - a*c*4;
  11. 	root1 = (-b + sqrt(discriminant)) / (2*a);
  12. 	root2 = (-b - sqrt(discriminant)) / (2*a);
  13. 	printf("Discriminant = %f\n", discriminant);
  14. 	if (discriminant > 0)
  15. 	{
  16. 		printf("Roots are real and distinct.\n");
  17. 		printf("Root 1 = %f\n", root1);
  18. 		printf("Root 2 = %f\n", root2);
  19. 	}
  20. 	else if (discriminant == 0)
  21. 	{
  22. 		printf("Roots are real and equal.\n");
  23. 		printf("Root 1 = Root 2 = %f\n", root1);
  24. 	}
  25. 	else
  26. 	{
  27. 		printf("Roots are complex.\n");
  28. 	}
  29.  
  30. 	return 0;
  31. }
  32.  
Success #stdin #stdout 0s 5320KB
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stdin
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1,-3,2
stdout
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Enter coefficients a, b and c: Discriminant = 0.000000
Roots are real and distinct.
Root 1 = 0.000000
Root 2 = -0.000000
https://ideone.com/I0mcdw
language:
C (gcc 8.3)
created:
2 hours ago
visibility:
public

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