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  1. #include <math.h>
  2. #include <stdio.h>
  3.  
  4. void print(double x);
  5.  
  6. int main(void) {
  7. 	printf("%f\n", -1234.5678);
  8. 	print(-1234.5678);
  9. 	printf("%f\n", 10000000000000.0);
  10. 	print(10000000000000.0);
  11. 	printf("%f\n", 99999999999999.0);
  12. 	print(99999999999999.0);
  13. 	printf("%f\n", 0.0000001);
  14. 	print(0.0000001);
  15. 	printf("%f\n", 0.000001);
  16. 	print(0.000001);
  17. 	printf("%f\n", 0.99999999999999);
  18. 	print(0.99999999999999);
  19. 	return 0;
  20. }
  21.  
  22. void print(double x) {
  23. 	double y;
  24. 	int ds[64];
  25. 	int i, j;
  26.  
  27. 	if (x < 0.0) {
  28. 		putchar('-');
  29. 	}
  30.  
  31. 	y = fabs(x) * 1000000.0;
  32. 	i = 0;
  33. 	while (y >= 1.0) {
  34. 		ds[i++] = (int)fmod(y, 10.0);
  35. 		y /= 10.0;
  36. 	}
  37. 	while (i < 7) {
  38. 		ds[i++] = 0;
  39. 	}
  40. 	while (i > 0) {
  41. 		if (i == 6) {
  42. 			putchar('.');
  43. 		}
  44. 		putchar('0' + ds[--i]);
  45. 	}
  46.  
  47. 	putchar('\n');
  48. }
  49.  
Success #stdin #stdout 0s 2292KB
comments (?)
stdin 
Standard input is empty
stdout 
-1234.567800
-1234.567800
10000000000000.000000
10000000000000.000000
99999999999999.000000
99999999999999.000586
0.000000
0.000000
0.000001
0.000001
1.000000
0.999999
https://ideone.com/0mTWkV
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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