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  1. #include <stdio.h>
  2.  
  3. #define FLOAT_PRECISION 2
  4.  
  5. int main(void)
  6. {
  7. 	double lbfl = 0.150000006f;
  8.  
  9. 	char float_format[10] = { '\0' };
  10. 	sprintf(float_format, "%%.%dg", FLOAT_PRECISION);
  11.  
  12. 	printf("old lbfl = %.15f\n", lbfl);
  13.  
  14. 	char reg[10] = { '\0' };
  15. 	sprintf(reg, float_format, lbfl);
  16. 	sscanf(reg, "%lf", &lbfl);
  17.  
  18. 	printf("new lbfl = %.15f\n", lbfl);
  19.  
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0s 2052KB
comments ()
stdin 
Standard input is empty
stdout 
old lbfl = 0.150000005960464
new lbfl = 0.150000000000000
https://ideone.com/8KiMJQ
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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