November 12th, 2010, 05:59 PM
I keep trying different ways of writing a compare function but when I run the program I keep getting a seg fault at the qsort function call.
And the qsort call:
int comp(const void *a, const void *b)
const Wordrec **l = (const Wordrec **) a;
const Wordrec **r = (const Wordrec **) b;
return strcmp((*l) -> data, (*r) -> data);
record is a pointer to a pointer (**record), used like a dynamic array and numwords is the number of words/records.
qsort(record, numwords, sizeof(Wordrec), comp);
This is homework. I'm supposed to read in a text file, read out a text file with all the lines a certain size or less, and read out a sorted text file that has one occurrence of each word (without worrying about punctuation) and the number of times that word occurred.
Everything but the sorted part is done, I just can't seem to get the qsort function to work right.
Any help will be greatly appreciated. Thank you.
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