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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. double solve1(double a,double b,double c){
  5. 	if(a==0){
  6. 		return -c/b;
  7. 	}
  8. 	if(b*b-4*a*c<0){
  9. 		printf("Complex\n");
  10. 		return 0;
  11. 	}
  12. 	return (-b+sqrt(b*b-4*a*c))/2/a;
  13. }
  14.  
  15. double solve2(double a,double b,double c){
  16. 	if(a==0){
  17. 		return -c/b;
  18. 	}
  19. 	if(b*b-4*a*c<0){
  20. 		printf("Complex\n");
  21. 		return 0;
  22. 	}
  23. 	return (-b-sqrt(b*b-4*a*c))/2/a;
  24. }
  25.  
  26. int main(void){
  27. 	double a,b,c,x1,x2;
  28. 	a=1.0;
  29. 	b=3.0;
  30. 	c=2.0;
  31. 	x1=solve1(a,b,c);
  32. 	x2=solve2(a,b,c);
  33. 	printf("x1=%lf\n",x1);
  34. 	if(x1!=x2){
  35. 		printf("x2=%lf\n",x2);
  36. 	}
  37. 	return 0;
  38. }
Success #stdin #stdout 0.01s 1720KB
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stdin
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Standard input is empty
stdout
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x1=-1.000000
x2=-2.000000
https://ideone.com/TPrAZ
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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