dev-cpp-users

[Dev-C++] Dev-C++ Bug? Using backslash within comments

[Jonathan D. <gri...@ho...>]

Has this problem been addressed before?  In Dev-C++ 4.9.9.2, it can mess 
with your program if you use the character '\' within a comment.  I haven't 
had formal programming instruction, but I have seen this usage in a program 
compiled by another compiler (probably VC++), so I don't think it's supposed 
to be a no-no.  Can this be fixed so nobody else needs to spend wasted time 
finding this problem in their program?

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Re: [Dev-C++] Dev-C++ Bug? Using backslash within comments

[Per W. <pw...@ia...>]

An example please.

Are you talking about the syntax highlighting in the Dev-C++ editor, or
about a compile problem using the MinGW compiler?

/Per W

On Tue, 5 Jul 2005, Jonathan Dearborn wrote:

> Has this problem been addressed before?  In Dev-C++ 4.9.9.2, it can mess
> with your program if you use the character '\' within a comment.  I haven't
> had formal programming instruction, but I have seen this usage in a program
> compiled by another compiler (probably VC++), so I don't think it's supposed
> to be a no-no.  Can this be fixed so nobody else needs to spend wasted time
> finding this problem in their program?

Re: [Dev-C++] Dev-C++ Bug? Using backslash within comments

[Scott S. <ssi...@sp...>]

Per Westermark wrote:

>An example please.
>
>Are you talking about the syntax highlighting in the Dev-C++ editor, or
>about a compile problem using the MinGW compiler?
>
>/Per W
>
>On Tue, 5 Jul 2005, Jonathan Dearborn wrote:
>
>  
>
>>Has this problem been addressed before?  In Dev-C++ 4.9.9.2, it can mess
>>with your program if you use the character '\' within a comment.  I haven't
>>had formal programming instruction, but I have seen this usage in a program
>>compiled by another compiler (probably VC++), so I don't think it's supposed
>>to be a no-no.  Can this be fixed so nobody else needs to spend wasted time
>>finding this problem in their program?
>>    
>>
>
>
>
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>  
>
Can you post the code that isn't working? I just want to see what 
exactly it is and if any other factors could be producing the error.

-- 
~~Scott Simontis~~
ssi...@sp...

Re: [Dev-C++] Dev-C++ Bug? Using backslash within comments

[Jonathan D. <gri...@ho...>]

Here's an example program, though if you'd like to see the compiled program 
I found it on, check out 
http://www.maybe-phil.net/websites/no-skill/jnrdev/en/jnrdev3/

That program is based on SDL, so if you're not into that, just use this one:
-----------------

#include <stdio.h>
#include <iostream>

int main(int argc, char *argv[])
{
  int y;
  int x = 200;
  //  let's cause a problem with backslash \
  y =  x*55;
  printf("%d\n",y);
  system("PAUSE");

  printf("\n");

  //  now without it
  y =  x*55;
  printf("%d\n",y);
  system("PAUSE");
  return 0;

  //  shouldn't the compiler ignore everything after these C++ style 
comments?
}


------------------
That about shows it.  I know it's a little bother and I'm not surprised it 
hasn't come up before, but I just wanted to help in case someone else gets 
stuck.  Of course, it's only a problem with the C++ style comments.

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Re: [Dev-C++] Dev-C++ Bug? Using backslash within comments

[Peter B. <pb...@hg...>]

(snip)
>  //  let's cause a problem with backslash \
>  y =  x*55;
(snip)

Mmmm, I think it's not a bug it's a feature...

This is a backslash at/or before the end of line. This tells the
preprocessor that the statement continues on next line. So in your
example 'y =  x*55;' belongs to the comment.

Compile with -Wall and you will get a warning.

Peter