Thread: pointer dereference problem in sortFunction

use

Code:

    return ((sched_record *) p)->course - ((sched_record *) q)->course;

Kurt

Originally Posted by ZuK

use

Code:

    return ((sched_record *) p)->course - ((sched_record *) q)->course;

Kurt

Dang! Thank You. I appreciate it. All is good except an undefined reference to 'WinMain@16' in code::blocks in the sortFunction tab and then on the main tab, I get an undefined reference to 'sortFunction.

Actually I just decided to set up a window application project and made new files with the exact same coded as above, with of course the correction to the sortFunction. Now I get a

Code:

undefined reference to 'sortFunction'

I checked the spelling, and I have it defined in my .h file. Wish I can figure this one out. It is pointing to line 26 of my main.c file. I pretty sure this is the way to define the parameters of the qsort function.

Code:

qsort(data, MAX_RECORD, sizeof(sched_record), sortFunction);

Interesting, I just tried it on our unix system at school and works perfectly fine.

Here is the compile log:

Code:

mingw32-gcc.exe -Wall  -g     -c "C:\Users\Clint Sharp\Documents\C Files\Server1\main.c" -o obj\Debug\main.o
mingw32-g++.exe  -o bin\Debug\Server1.exe obj\Debug\main.o    
obj\Debug\main.o: In function `main':
C:/Users/Clint Sharp/Documents/C Files/Server1/main.c:26: undefined reference to `sortFunction'
collect2: ld returned 1 exit status
Process terminated with status 1 (0 minutes, 0 seconds)
1 errors, 0 warnings

Maybe someone can figure out what the heck is going on.