fork download
copy 
  1. #include <stdio.h>
  2. #include <math.h>
  3. void main()
  4. {
  5. 	float a,b,c,disc,x1,x2,realpart,imagpart;
  6. 	scanf("%f,%f,%f",&a,&b,&c);
  7. 	printf("The equation");
  8. 	if(fabs(a)<=1e-6)
  9. 	printf("is not a quadratic\n");
  10. 	else
  11. 	{
  12. 		disc=b*b-4*a*c;
  13. 		if(fabs(disc)<=1e-6)
  14. 		printf("has two equal roots:%8.4f\n",-b/(2*a));
  15. 		else
  16. 		if(disc>1e-6)
  17. 		{
  18. 			x1=(-b+sqrt(disc))/(2*a);
  19. 			x2+(-b-sqrt(disc))/(2*a);
  20. 			printf("has distinct real roots:%8.4f and %8.4f\n",x1,x2);
  21. 		}
  22. 		else
  23. 		{
  24. 			realpart=-b/(2*a);
  25. 			imagpart=sqrt(-disc)/(2*a);
  26. 			printf("has complex roots:\n");
  27. 			printf("%8.4f+%8.4fi\n",realpart,imagpart);
  28. 			printf("%8.4f-%8.4fi\n",realpart,imagpart);
  29. 		}
  30. 	}
  31. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin
copy 
2,6,1
stdout
copy 
The equationhas distinct real roots: -0.1771 and   0.0000
https://ideone.com/w8VOrm
language:
C (gcc 8.3)
created:
4 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!