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  1. #include <stdio.h>
  2.  
  3. long long unsigned silnia_iter(unsigned);
  4. long long unsigned silnia_rekur(unsigned);
  5.  
  6. int main(int argc, char* argv[]) 
  7. {
  8. 	printf("%I64u\n", silnia_iter(0));
  9.     printf("%I64u\n", silnia_iter(1));
  10.     printf("%I64u\n", silnia_iter(2));
  11.     printf("%I64u\n", silnia_iter(5));
  12.  
  13.     printf("%I64u\n", silnia_rekur(0));
  14.     printf("%I64u\n", silnia_rekur(1));
  15.     printf("%I64u\n", silnia_rekur(2));
  16.     printf("%I64u\n", silnia_rekur(5));
  17.  
  18.     return 0;
  19. }
  20.  
  21. long long unsigned silnia_iter(unsigned n)
  22. {
  23.     if (n < 0)
  24.     {
  25.         return -1;
  26.     }
  27.     else
  28.     {
  29.         long long unsigned silnia = 1;
  30.         size_t i;
  31.  
  32.         for (i = 1; i <= n; i++)
  33.         {
  34.             silnia *= i;
  35.         }
  36.  
  37.         return silnia;
  38.     }
  39. }
  40.  
  41. long long unsigned silnia_rekur(unsigned n)
  42. {
  43.     if (n < 0)
  44.     {
  45.         return -1;
  46.     }
  47.     else if (n < 2)
  48.     {
  49.         return 1;
  50.     }
  51.     else
  52.     {
  53.         return n*silnia_rekur(n-1);
  54.     }
  55. }
Success #stdin #stdout 0s 2156KB
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https://ideone.com/jRO9i5
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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