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  1. #include <stdlib.h>
  2. #include <stdio.h>
  3.  
  4.  
  5. int even_order( const void *first_arg, const void *second_arg )
  6. {
  7.     int first = *(int*)first_arg;
  8.     int second = *(int*)second_arg;
  9.     if ( first < second )
  10.     {
  11.         return -1;
  12.     }
  13.     else if ( first == second )
  14.     {
  15.         return 0;
  16.     }
  17.     else
  18.     {
  19.         return 1;
  20.     }
  21. }
  22.  
  23. int main()
  24. {
  25.     int array[5];
  26.     int i;
  27.     /* fill array */
  28.     for ( i = 0; i < 5; i++ )
  29.     {
  30.         array[ i ] = 10 - 2 * i;
  31.     }
  32.     qsort( array, 5 , sizeof( int ), even_order );
  33.     for ( i = 0; i < sizeof(array)/sizeof(int); i++ )
  34.     {
  35.         printf ( "%d\n" ,array[ i ] );
  36.     }
  37.     return 0;
  38. }
Success #stdin #stdout 0s 5304KB
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https://ideone.com/KNKt30
language:
C (gcc 8.3)
created:
14 days ago
visibility:
public

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