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  1. #include <stdlib.h>
  2.  
  3. #include <stdio.h>
  4.  
  5. #include <string.h>
  6.  
  7.  
  8.  
  9. struct entry
  10.  
  11. {
  12.  
  13.     char key;
  14.  
  15.     const char* value;
  16.  
  17. };
  18.  
  19.  
  20.  
  21. const struct entry map[] =
  22.  
  23.     {
  24.  
  25.         { 'a', "a.text" },
  26.  
  27.         { 'b', "b.text" },
  28.  
  29.         { 'c', "c.text" },
  30.  
  31.         { 'd', "d.text" },
  32.  
  33.         { 'e', "e.text" }
  34.  
  35.     };
  36.  
  37.  
  38.  
  39. int compare(const void* l, const void* r)
  40.  
  41. {
  42.  
  43.     const struct entry* ll = (const struct entry*)l;
  44.  
  45.     const struct entry* rr = (const struct entry*)r;
  46.  
  47.  
  48.  
  49.     return ll->key - rr->key;
  50.  
  51. }
  52.  
  53.  
  54.  
  55. int main()
  56.  
  57. {
  58.  
  59.     struct entry find = { 'd' };
  60.  
  61.  
  62.  
  63.     struct entry* e = bsearch(&find,
  64.  
  65.                               map,
  66.  
  67.                               sizeof(map)/sizeof(map[0]),
  68.  
  69.                               sizeof(map[0]),
  70.  
  71.                               compare);
  72.  
  73.  
  74.  
  75.     if (e)
  76.  
  77.     {
  78.  
  79.         printf("{%c, %s}\n", e->key, e->value);
  80.  
  81.     }
  82.  
  83.     else
  84.  
  85.     {
  86.  
  87.         printf("Not found\n");
  88.  
  89.     }
  90.  
  91.  
  92.  
  93.     return 0;
  94.  
  95. }
  96.  
  97.  
Success #stdin #stdout 0.01s 1720KB
comments (?)
stdin 
Standard input is empty
stdout 
{d, d.text}
https://ideone.com/x6roRm
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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