Hello all,

As far as I understand, standard C preprocessor works with text files and knows nothing about C but that's not right with DMC which refuses to preprocess ("-e" option) plain text files.

I mean, is it right that there's no way to use DMC to preprocess non-c (or invalid c) files? Am I missing something? I get lexical errors with DMC where I get correctly preprocessed text files with "cl /P" or "gcc -E".

Thanks,
Paul.

Paul Smirnov wrote:
> As far as I understand, standard C preprocessor works with text files and
> knows nothing about C but that's not right with DMC which refuses to
> preprocess ("-e" option) plain text files.
> 
> I mean, is it right that there's no way to use DMC to preprocess non-c (or
> invalid c) files? Am I missing something? I get lexical errors with DMC where
> I get correctly preprocessed text files with "cl /P" or "gcc -E".

A standard compliant preprocessor will not work with text files that are invalid C code. The preprocessor is defined to work by tokenizing the source text into preprocessor tokens; if there are non-C tokens in the source text, it will (correctly) fail.

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ok, dusting off many years of rust in my C programming, trying dmc, and what seems to be perfectly valid cpp code (hello world) generates three errors, mostly abut expecting ; or whatever after } or { or return statement.

I assume this is a setup issue, any thoughts?

ralph wrote:
> ok, dusting off many years of rust in my C programming, trying dmc, and what seems
> to be perfectly valid cpp code (hello world) generates three errors, mostly abut
> expecting ; or whatever after } or { or return statement.
> 
> I assume this is a setup issue, any thoughts?

Try the -cpp switch.

code:

#include <iostream.h>


int main();
{
cout <<"Hello World!\n";
    return 0;
}

-------------

error:

{
^
hello.cpp(5) : Error: '=', ';' or ',' expected
    return 0;
         ^
hello.cpp(7) : Error: '=', ';' or ',' expected
}
^
hello.cpp(8) : Error: identifier or '( declarator )' expected
--- errorlevel 1

and that's the same error with the -cpp switch.

ralph wrote:
> #include <iostream.h>
> 
> 
> int main();
> {
> cout <<"Hello World!\n";
>     return 0;
> }
> 

Remove the ; after main().

that was it!!! I copied the wrong example.

this should work, right?

code:

#include <iostream.h>
int main()
{
int x = 5;
int y = 7;
cout "\n";
cout << x + y << " " << x * y;
cout "\n";
return 0;
}

error:

cout "\n";
        ^
ch1_1.cpp(6) : Error: ';' expected following declaration of struct member
cout "\n";
        ^
ch1_1.cpp(8) : Error: ';' expected following declaration of struct member
--- errorlevel 1