Comments on: Bringing try catch blocks to C http://www.bgoncalves.com/notes/2007/10/19/bringing-try-catch-blocks-to-c/ Notes on Computation and Physics Fri, 21 Nov 2008 14:17:30 +0000 http://wordpress.org/?v=2.5 By: Ben Lindelof http://www.bgoncalves.com/notes/2007/10/19/bringing-try-catch-blocks-to-c/#comment-1396 Ben Lindelof Sat, 15 Dec 2007 00:04:07 +0000 http://www.bgoncalves.com/notes/2007/10/19/bringing-try-catch-blocks-to-c/#comment-1396 Should I start with C or C++? Exception errors are a good way to learn a new language, as I found with VB.NET. Should I start with C or C++?

Exception errors are a good way to learn a new language, as I found with VB.NET.

]]> By: bgoncalves http://www.bgoncalves.com/notes/2007/10/19/bringing-try-catch-blocks-to-c/#comment-683 bgoncalves Fri, 19 Oct 2007 22:08:52 +0000 http://www.bgoncalves.com/notes/2007/10/19/bringing-try-catch-blocks-to-c/#comment-683 I explain how to create a similar mechanism in C, despite the lack of Classes or any OOP concepts. The fact that I use a macro as a form of throwing the "exceptions" gives the added advantage that you can completely turn off error checking at compile time if you choose to do so. Of course, there are limitation to this approach... namely, my "exceptions" can't propagate up the stack. I believe this is a limitation of C for which there is no work around. If you know one, I would very much like to hear it. If you want something even closer to the way try-catch blocks are normally used you can do: <pre lang="C">#define try(code) {do{code}while(0);} #define catch(err,code) {if(error==err){code}}</pre> I explain how to create a similar mechanism in C, despite the lack of Classes or any OOP concepts. The fact that I use a macro as a form of throwing the “exceptions” gives the added advantage that you can completely turn off error checking at compile time if you choose to do so.
Of course, there are limitation to this approach… namely, my “exceptions” can’t propagate up the stack. I believe this is a limitation of C for which there is no work around. If you know one, I would very much like to hear it.
If you want something even closer to the way try-catch blocks are normally used you can do:

#define try(code) {do{code}while(0);}
#define catch(err,code) {if(error==err){code}}
]]> By: Anonymous http://www.bgoncalves.com/notes/2007/10/19/bringing-try-catch-blocks-to-c/#comment-682 Anonymous Fri, 19 Oct 2007 21:23:32 +0000 http://www.bgoncalves.com/notes/2007/10/19/bringing-try-catch-blocks-to-c/#comment-682 Misleading. You neither describe exceptions nor try-catch blocks in C. Misleading. You neither describe exceptions nor try-catch blocks in C.

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