Hi,

I was under the impression you can call a function from within a function. (hell recursions calling the same function within a function) so why am i getting errors with the code (attatched, cause its pretty big)? Its the status function that i've highlighted, i'm getting compiler errors regarding the "definition" of the function. I imagine it is the arguments to the function (I'm still pretty new, so pointers are not my forrté)

Any help would be greatly appreciated

Mitch

Attached Files

code.txt (4.5 KB, 460 views)

Hi spud. There a couple of problems that I see. First of all your functions need to be defined prior to calling them. So you either need to move your status function above your move function or do a definition at the top of your file like:

It is actually not a bad idea to do this, maybe even in a seperate header file for all of your functions (except main )

Also, when you call status in this context:

You are passing the address of myRover, when you actually should just pass myRover.

HTH

Cheers!

It doesnt like my definition is there a #something i have to put before it? and i vageuly remember being told about this definition thing. A header file seems like a very good idea, with all the function declarations, but do they have to be a certain format or can they just be a list of function declarations..

I'll play with headers one day.

I have tried the declarati you said, and i cant see anything wrong with it, it returns nothign so the void is fair, and the rover *, location ** seems right.

I swear lately C has driven me almost into using face.... though not yet.

Thank you for your reply dsmith, its appreciated.

Mitch

Hi Mitch. What is the error you are getting?

Maybe try:

My compiler doesn't need the variable names, but maybe yours does.

Also, make sure this definition is below the declaration of your structures for location and rover. I think I told you to put it at the top of the file

HTH

Thats prob what it is then, i have put it just under the #includes...
It compiles now, so thank you!

also, a side note: is this allowed:



Its also giving me hassle and not letting me carry on with the bits i need to.



The full code is above, but basically myRover is a structure containing a current x and current y and a map. the map is a 2d array of structures, with each "location" containing information such as an object id (such as 1=rock, 2=pool)

i'm trying to access the object id, based on only knowing the current_x and current_y position,

know what I'm getting at?

Any help again would be greatly appreciated.

Mitch

you know when you read the preview, looks fine, post then read the actual post and answer your own question...

skip the myRover bit, yeah i thought so

Cheers for your help dsmith, really sorted me out!

Thanks again, Mitch