Question

Hello I have some problems with the bsearch() function. I get the “Access violation reading location” exception.
I’m using it as follows:

typedef char **arstr;

int compareexp(const void *a, const void *b){ 
    return strcmp(*(const arstr)a, *(const arstr)b);
}

binsrch = bsearch(&key, file_array, linecount, WORDMAX+2, compareexp);

‘file_array’ is my dynamic string array with 2401 elements. each element is max 22 chars long imported from a *.txt document.

‘linecount’ is the integer 2402 and refers to the line number from the same *.txt document.

‘WORDMAX’ is defined as 20

I don’t really get the reason why my function is failing.
I guess there is something wrong with the values from linecount or WORDMAX.

Answer 1

After looking at the example from the like it seems like you either might be missing a * in the comperison or WORDMAX +2 not is the right approach. Try changing that WORDMAX to get the size of the struct you are using.