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From: Martin Wuerthner <spamtrap@mw-software.com>
Newsgroups: comp.sys.acorn.programmer
Subject: Re: A !GCC-compiler question (C++)
Date: Mon, 22 Aug 2011 20:00:12 +0200
Organization: MW Software
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In message <4e527a31$0$18803$ba4acef3@reader.news.orange.fr>
          Rick Murray <heyrickmail-usenet@yahoo.co.uk> wrote:

> On 22/08/2011 17:23, Alexander Ausserstorfer wrote:

>> #include<iostream>

> Shouldn't that be <iostream.h> ?

No. The C++ STL headers should be included without a ".h" suffix.

>> using namespace std;
>> void main()
>> {
>>    cout<<  "Hello World!"<<  endl;
>> }
>>
>> Using the GCC-compiler (4.1.1) for RISC OS doesn't work:
>>
>> *gcc cpp.test -o test
>> test.cpp:1:20: error: iostream: No such file or directory

>> test.cpp:3: error: '::main' must return 'int'

> Seems a strange requirement...

Not really strange. The return value is required as the exit code for 
the calling OS. In contrast to C, which merely has undefined behaviour 
for "void main()", the C++ actually enforces an 'int' return type.

-- 
Martin
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Martin Wuerthner         MW Software      http://www.mw-software.com/
        RISC OS Software for Design, Printing and Publishing
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