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  1. #include <stdio.h>
  2.  
  3. #define MAX_N           1000000
  4.  
  5. #define IS_PRIME        0
  6. #define NOT_PRIME       1
  7.  
  8. int main(void)
  9. {
  10.     int primeTable[MAX_N] = {1, 1};
  11.     long long i, j;
  12.     for (i = 2; i < MAX_N; ++i)
  13.         if (primeTable[i] == IS_PRIME)
  14.             for (j = i * i; j < MAX_N; j += i)
  15.                 primeTable[j] = NOT_PRIME;
  16.  
  17.     return 0;
  18. }
Success #stdin #stdout 0.03s 5616KB
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https://ideone.com/bIivan
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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