Pointer Problems again

[chriscolden]

hey,

i have a pointer problem with my compare function.

int dataComp( const void * a, const void * b ) {
	float * arg1, arg2;

	comps++;
	
	arg1 = (float*) a;
	arg2 = (float*) b;
	
	if( *arg1 < *arg2 ) return -1;
	else if( *arg1 == *arg2 ) return 0;
	else return 1;
}

this function is ment to compare the data for use with qsort and some of my own sorting functions. comps++; is used as a counter for testing purposes.

any ideas why i'm getting the following errors....
Illegal use of floating point
arg1 is assign a value that is never used
Parameter 'b' is never used.

Thanks once again for all the great help you all provide.

Cheers

Chris

[King Mir]

Arg2 is a float, not a float pointer. To make it a pointer do:
float * arg1, *arg2;

That should solve your problem.

[chriscolden]

thanks, sorted out all the errors. cheers

[Desolation]

I'm a noob when it comes to C and I have to use Borland C++ 3.1 because my university won't move on.

However I do use Turbo C++ 3.1 for windows. Makes life abit less stressful.

It's a joke right ? I know it's a sig so it must be. If it's not... well download Dev-C++ and you'll go straight to heaven

[chriscolden]

nope its true, we have to make sure it runs on borland c 3.1 for dos as that is the only thing our university will use to teach us.

i'm all for using better development enviroments, i think 1/2 of my problems are the result of the crap debugger in borland c 3.1 for dos.

If anyone knows if this dev-c++ is good for developing c programms that will compile and run ok in borland 3.1, can you post a link for me to download it.

thanks

Chris

[Dave_Sinkula]

http://www.bloodshed.net/devcpp.html

If you write Standard C, the code should compile on any compiler.

[cDev]

nope its true, we have to make sure it runs on borland c 3.1 for dos as that is the only thing our university will use to teach us.

How annoying is that? When I was in undergrad my college forced us to purchase Microsoft Visual Studio, and it turned me off from programming because I hated using it. Now Linux has helped me to enjoy programming again
P.S. Dev-C++ rules. You should have no problem doing all your development with it. Then I reccomend you just do a quick compile in Boreland before you have to submit your assignments (to be on the safe side.)

[jafet]

Dev-C++ is excellent, but development has stalled. You may also want to try out Code::Blocks.

[xeddiex]

I personally recommend Visual C++ 2005 Express Edition . It's free also , Just don't forget to create your source files with the .c extension or they'll default to .cpp (c++).