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Could you please give me a brief explanation of what precompiled headers are?<br />
<br />
Thanks
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Could you please give me a brief explanation of what precompiled headers are?

Thanks

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'Precompiled headers' basically are already parsed headers that are stored in binarily in .pch files to speed up compilation. If these are present, the compiler can read the information directly from them instead parsing the header files again. This is particularly useful for e.g. Windows SDK headers, since they are quite large and hardly ever change.
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'Precompiled headers' basically are already parsed headers that are stored in binarily in .pch files to speed up compilation. If these are present, the compiler can read the information directly from them instead parsing the header files again. This is particularly useful for e.g. Windows SDK headers, since they are quite large and hardly ever change.

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Oh right, pretty self explanatory I guess - hehe<br />
Makes great sense.<br />
<br />
Thank you. :D
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Oh right, pretty self explanatory I guess - hehe
Makes great sense.

Thank you. :D

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I'm using Visual Studio 2005 Pro, and when I create a Win32 Console app [without including the stdafx.h header], I get the following compilation error:<br />
<br />
fatal error C1010: unexpected end of file while looking for precompiled header. Did you forget to add '#include &quot;stdafx.h&quot;' to your source?<br />
<br />
When I do include this header, it all compiles fine.<br />
<br />
But, why is VS insisting on it? All stdafx.h contains on my comp, is:<br />
<br />
#pragma once<br />
#define WIN32_LEAN_AND_MEAN<br />
#include &lt;stdio.h&gt;<br />
#include &lt;tchar.h&gt;<br />
<br />
What's so special about it?<br />
<br />
<br />
Thanks
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I'm using Visual Studio 2005 Pro, and when I create a Win32 Console app [without including the stdafx.h header], I get the following compilation error:

fatal error C1010: unexpected end of file while looking for precompiled header. Did you forget to add '#include "stdafx.h"' to your source?

When I do include this header, it all compiles fine.

But, why is VS insisting on it? All stdafx.h contains on my comp, is:

#pragma once
#define WIN32_LEAN_AND_MEAN
#include <stdio.h>
#include <tchar.h>

What's so special about it?


Thanks

stdafx.h ?

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.