Quick Warning Question

This is a discussion on Quick Warning Question within the C Programming forums, part of the General Programming Boards category; My program works perfectly (WOOHOO!!!!) Just one little warning I'm getting: Code: countWords.c:57: warning: passing argument 4 of qsort from ...

  1. #1
    Registered User
    Join Date
    Apr 2008
    Posts
    167

    Quick Warning Question

    My program works perfectly (WOOHOO!!!!)

    Just one little warning I'm getting:

    Code:
    countWords.c:57: warning: passing argument 4 of qsort from incompatible pointer type
    Line 57:
    Code:
    qsort( hte_array, HT_getNrOfElements(), sizeof(HT_Element), compar_HTelements);
    And my function:
    Code:
    int compar_HTelements(HT_Element *pa, HT_Element *pb)
    {
      if ( (*pb).count != (*pa).count )
        return (*pb).count - (*pa).count;
      else
        return strcmp( (*pa).word, (*pb).word );
    }
    Why is the compiler giving a warning here? Why is it not valid?

    Thanks!

    =D

  2. #2
    and the Hat of Guessing tabstop's Avatar
    Join Date
    Nov 2007
    Posts
    14,185
    The fourth argument of qsort must be of the type int(void *, void *); and compar_HTelements is not of that type.

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