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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int main() {
  5. 	double integral = 0.0f;
  6. 	double fractional = 0.0f;
  7. 	double num = 100.0f;
  8.  
  9. 	fractional = modf(num, &integral);
  10.  
  11. 	if ((num >= 0) && (fractional == 0.0))
  12. 	{
  13. 		printf("Natural!\n");
  14. 	}
  15. 	else
  16. 	{
  17. 		printf("Unnatural.\n");
  18. 	}
  19.  
  20. 	return 0;
  21. }
Success #stdin #stdout 0s 3096KB
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Natural!
https://ideone.com/36stzH
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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