Syntax

  #include <stdlib.h>  
   
  void qsort  (  
     void    *base,   
     size_t   num,   
     size_t   width,   
     int      (*compar) (  
                  const void *,  
                  const void *));
  

Parameters

base

(IN) Points to the array to sort.

num

(IN) Specifies the number of elements in the array.

width

(IN) Specifies the size (in bytes) of each element in the array.

compar

(IN) Points to the comparison function.

Remarks

qsort sorts an array of elements (pointed to by the base parameter) using Hoare’s Quicksort algorithm.

The size of each element in the array is the number of bytes specified by the width parameter.

The comparison function pointed to by the compar parameter is called with two arguments that point to elements in the array. The comparison function will return an integer less than, equal to, or greater than zero if the first argument is less than, equal to, or greater than the second argument.

See Also

bsearch