From: Martin Ambuhl <mambuhl AT earthlink DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: return type for `main' changed to `int'
Date: Sun, 17 Oct 1999 12:42:21 -0400
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To: djgpp AT delorie DOT com
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Rodeo Red wrote:
> 
> I got very frustrated and erased djgpp. Now I'm starting over with the
> newer version. I've decided not to use rhide until I can get djgpp to
> work without rhide.
> 
> This command line:
> 
>   gcc -c -Wall hello.cpp
    ^^^
This should be gpp (or g++ or gxx, depending on installation) 
or hello.cpp should be renamed hello.c 
or you should explicitly link the standard c++ libs

> 
> is supposed to produce the object file hello.o, but doesn't . Instead I
> get this message:
> hello.cpp:4: return type for `main' changed to `int'

You left out the word "Warning".  It is significant.

> 
> What does this mean ?

I means gcc turned your illegal code into legal code.

> 
> here is hello.cpp:
> 
> #include <iostream.h>
> 
>    void main ()
>       {
>              cout <<"Hello world!\n";
>                 }
> 
> ----------------------------------------------------------------
> What happened when I went to the faq:
> 
> I searched for "return type for `main'" - no results
> I searched  for "return type"- found section 22.24 "What should the main
> function return in a C program? "
> Does not seem to apply because I'm using C++

In C++ as well, main returns an int.


-- 
Martin Ambuhl	mambuhl AT earthlink DOT net

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