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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int rizes(float a, float b, float c, float *x1, float *x2);
  5.  
  6. main()
  7. {
  8. 	float a,b,c,riza1,riza2;
  9. 	int plithos;
  10.  
  11. 	/* 1. Diavasma tis eisodou */
  12.  
  13. 	printf("Dwse to a: ");
  14. 	scanf("%f",&a);
  15.  
  16. 	printf("Dwse to b: ");
  17. 	scanf("%f",&b);
  18.  
  19. 	printf("Dwse to c: ");
  20. 	scanf("%f",&c);	
  21.  
  22. 	/* 2. Ypologismos rizwn */
  23. 	plithos=rizes(a,b,c,&riza1, &riza2);
  24.  
  25. 	/* 3. Ektypwsi tou apotelesmatos */
  26.  
  27. 	if (plithos==0)
  28. 		printf("Den exei pragmatikes rizes");
  29. 	else if (plithos==1)
  30. 		printf("Exei dipli riza tin %f", riza1);
  31. 	else 
  32. 		printf("Exei rizes: %f kai %f", riza1, riza2);
  33.  
  34. }
  35.  
  36. int rizes(float a, float b, float c, float *x1, float *x2)
  37. {
  38. 	float D;
  39.  
  40. 	D=b*b-4*a*c;
  41.  
  42. 	if (D<0)
  43. 		return 0;
  44. 	else if (D==0)
  45. 	{
  46. 		*x1 = -b/(2*a);
  47. 		return 1;
  48. 	}
  49. 	else 
  50. 	{
  51. 		*x1=(-b+sqrt(D))/(2*a);
  52. 		*x2=(-b-sqrt(D))/(2*a);
  53. 		return 2;
  54. 	}
  55. }
  56.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin 
45
stdout 
Dwse to a: Dwse to b: Dwse to c: Exei rizes: inf kai -inf
https://ideone.com/JKQOwL
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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