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  1. #include <stdio.h>
  2.  
  3. double p10[] = {
  4. 	0.1, 0.01, 0.001, 0.0001, 0.00001, 0.000001, 0.0000001, 0.00000001, 0.000000001, 0.0000000001
  5. };
  6.  
  7. int main(void) {
  8. 	double a = 1;
  9. 	for (int i = 0 ; i != 10 ; i++) {
  10. 		double aa = a * 0.1;
  11. 		double d = aa - p10[i];
  12. 		printf("%d %.30lf\n", aa == p10[i], d);
  13. 		a = aa;
  14. 	}
  15. 	return 0;
  16. }
  17.  
Success #stdin #stdout 0s 2052KB
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stdin
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Standard input is empty
stdout
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1 0.000000000000000000000000000000
1 0.000000000000000000000000000000
1 0.000000000000000000000000000000
1 0.000000000000000000000000000000
1 0.000000000000000000000000000000
0 0.000000000000000000000211758237
0 0.000000000000000000000026469780
0 0.000000000000000000000001654361
0 0.000000000000000000000000206795
0 0.000000000000000000000000025849
https://ideone.com/8CT75P
language:
C99 (gcc 8.3)
created:
10 years ago
visibility:
public

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