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Message-ID:	<3EFDC620.8060402@t-online.de>
Date:	Sat, 28 Jun 2003 18:45:20 +0200
From:	=?ISO-8859-1?Q?Markus_Sch=F6nhaber?= <mks99 AT t-online DOT de>
Reply-To:	cygwin AT cygwin DOT com
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To:	cygwin AT cygwin DOT com
Subject:	Re: g++ error
References:	<LAW15-DAV71nkrS4mWG0001e592 AT hotmail DOT com>
In-Reply-To:	<LAW15-DAV71nkrS4mWG0001e592@hotmail.com>

Peng Yu wrote:
> Hi,
>     When I tried to compile this file by g++, I got a error.
> 
> #include <iostream>
> int main(){
> cout << "Hello World" << endl;
> }
> 
> errors are:
> 
> test.C: In function `int main()':
> test.C:3: `cout' undeclared (first use this function)
> test.C:3: (Each undeclared identifier is reported only once for each
> function
>    it appears in.)
> test.C:3: `endl' undeclared (first use this function)
> 
> Do I need to install some library?

No, you simply have to respect C++ namespaces. Try

std::cout << ... << std:endl;

or alternatively

#include <iostream>
using namespace std;
...

Regards
   mks


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