From: Jason Green <news AT jgreen4 DOT fsnet DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: I don't understand the compiler...(semi-newbie)
Date: Thu, 09 Mar 2000 23:00:03 +0000
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caramaith <caramaith AT myokay DOT net> wrote:

> first and furthermore big thx fly out to Jason, Eli, Damian and Robin
> for helping me out understanding the compiling and linking process. I
> could well read the hundreds of pages with command-line options, but
> this newsgroup is there for giving quick help... thx again!!!

Huh!  You think 3 days to sort out a compile command is quick?

> now I try to compile and link using:
> 
> gpp -g Stack.o Video.o videostack.cpp -o videostack
> 
> and the compiler flags an error saying 
> 
> videostack.cpp:10: 'Stack' undeclared(first use this function)
> videostack.cpp:10: parse error before ';'
> videostack.cpp:11: 'videoStack' undeclared(first use this function)
> 
> .....which are errors occuring when trying to declare variables without
> types, but I did include the "Stack.h" as well as stating when linking
> the code. here's an output of the beginning of "videostack.cpp"
> 
[snip incomplete code]

> Did I miss out on something???? please help me (again as soon and as
> professional as possible) ... thanks in advance...

There is nothing obvious from what you posted that would cause those
errors.  The problem lies somewhere in the code you did not post.  

I suggest to compile also using the -Wall switch and compile just one
file at a time.  Try to isolate the problem by reducing the code until
the errors go away.

Based on what you posted, this should compile without error:

// test.cpp
#include <iostream.h>
#include "Stack.h"
int main(){
  Stack videoStack;             
  videoStack.initialize();      
}

gpp -Wall -c test.cpp


BTW, you might find some other groups useful if you have problems
purely language related: alt.comp.lang.learn.c-c++ & comp.lang.c++