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  1. #include <stdio.h>
  2.  
  3. int isprime(int n)
  4. {
  5. 	int	i;
  6.  
  7. 	if (n % 2 == 0) {
  8. 		return n == 2;
  9. 	}
  10. 	for (i = 3; i * i <= n; i += 2) {
  11. 		if (n % i == 0) {
  12. 			return 0;
  13. 		}
  14. 	}
  15. 	return 1;
  16. }
  17.  
  18. void prime(int n)
  19. {
  20. 	int	i;
  21.  
  22. 	for (i = 2; i <= n; i++) {
  23. 		if (isprime(i)) {
  24. 			printf("%d\n", i);
  25. 		}
  26. 	}
  27. }
  28.  
  29. int main()
  30. {
  31. 	prime(100);
  32. 	return 0;
  33. }
  34.  
Success #stdin #stdout 0.02s 1676KB
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https://ideone.com/4wILs
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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