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3DModelerMan

Preprocessor on same line as code

7 posts in this topic

As an exercise I recently challenged myself to try and write a program in only one line of code. I've come pretty far into it, but one thing bugs me, and doesn't really make it a one liner. When I include iostream it has to have a linebreak. Is there anything in the C++ standard that allows you to put preprocessor statements on the same line as regular code?
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Include the contents of the header and expand all the macros into one line? ([url=http://msdn.microsoft.com/en-us/library/8z9z0bx6%28v=vs.110%29.aspx]Preprocess to file[/url], [url=http://msdn.microsoft.com/en-us/library/hdkef6tk(v=vs.110).aspx]ShowIncludes[/url]) Edited by fastcall22
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[quote name='fastcall22' timestamp='1342925622' post='4961837']
Include the contents of the header and expand all the macros into one line?
[/quote]You mean, create a gigantic one-line file ... several megabytes ... somehow i doubt OP will find it acceptable :/

/me has been hit with a similar problem in the past (macro-based boiler-plate code-gen issues) and i did not find any workarounds, i doubt there is any (besides adding a custom compilation step before preprocessor). Edited by tanzanite7
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Why not challenge yourself to do something [u]useful[/u]?

1) Including several hundred lines of iostream code into your own isn't a 1 line program. If you are going to do that, you might as well just include an entire program and have your 1 line be [i]Go()[/i];

2) 'Lines' is a useless metric. C++ is freeform and lines are just whitespace to be stripped out anyways. Cramming 15 statements into one line doesn't make it a 1 line program. It's just a poorly formatted 15 line program. Edited by Daaark
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I'm kind of interested in seeing your one liner.

I agree with Daaark that lines are a useless metric. I suppose a better one is exe file size. There are impressive 3d tech demos out on the internet including music and it all fits within 64KB limit.
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edit: damn, ninja post, this is in response to Daaark's post.

Don't know what OP had in mind, but i think you are missing the point.

It is NOT intended to be useful nor well readable etc. It is a challenge, bonus points if the code does something interesting. Check for example [url="http://mrl.nyu.edu/~perlin/"]this (at the top of Ken Perlin's homepage)[/url]. Edited by tanzanite7
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At least for GCC you can include a file on the command line: [url="http://stackoverflow.com/questions/3387453/include-header-files-from-command-line-gcc"]link[/url].
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