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Geek Culture / C Compiler / IDE

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Michael P
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Posted: 6th Dec 2010 12:44 Edited at: 6th Dec 2010 12:44
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I'm about to do a test as part of a job application for the programming language C. I have never used C, but have used C++ alot. I think its a good idea for me to have a play with C before doing the test even though apparently its very similar to C++, so what is the best compiler / IDE that will do straight C only (and not poison me with C++ constructs).

And is it reasonable to say that C is pretty much just C++ without objects, or are there other subtle / significant differences that I should be aware of?

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EddieB
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Posted: 7th Dec 2010 00:28
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Read up on Memory Management in C... can cause a lot of headaches if done wrong.

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Diggsey
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Posted: 7th Dec 2010 01:46
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Almost any C++ compiler will have a compiler setting to disable the '++' part (including VC++).

Main differences:
- No new/delete. Use "malloc(sizeof(type))" and cast to desired type and 'free(ptr)'.
- IIRC, you can't do 'for (int i = 0; i < 10; i++)', you have to declare 'i' before the 'for' statement.
- You must prefix type names with the type of type, ie. 'struct mystruct' must always be referred to like that, never as just 'mystruct'. eg: 'struct mystruct myvar;'
- Typedefs remove this restriction 'typedef struct mystruct myotherstruct' lets you use 'myotherstruct' as a type.
- No code inside types (ie. member functions).
- No inheritance
- No bool type or true/false constants
- No function overloading

To name but a few

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The Wilderbeast
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Posted: 7th Dec 2010 08:27 Edited at: 7th Dec 2010 08:28
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[Edit] Scratch that, silly question.


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Michael P
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Posted: 7th Dec 2010 13:39 Edited at: 7th Dec 2010 14:03
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Damn this sounds more awkward than I thought... Well I'm not quite sure what the tests going to be like, but according to people on the interwebs it has no time limit so in theory I can't fail? I'm going to go and buy a book today and then do the actual test on Friday, can't go wrong with that.

[edit]
So I started playing with some C code in VC but have a strange issue with free (I'm not sure if its supposed to work like this):


The last line won't compile if free has been used previously. Is this normal or is VC being naughty?

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Benjamin
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Posted: 7th Dec 2010 19:50
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Try declaring all of your variables at the top of the function.
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Jeku
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Posted: 8th Dec 2010 00:48
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Quote: "- No function overloading"


Really? It's been a long time since I've touched C, but I'm surprised it doesn't support function overloading


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JoelJ
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Posted: 8th Dec 2010 07:45
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Quote: "Really? It's been a long time since I've touched C, but I'm surprised it doesn't support function overloading
"

Yeah, I didn't believe it, but a quick search told me that it is. Thought that was strange.

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BearCDP
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Posted: 8th Dec 2010 09:49
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But it DOES support variable argument lists, which is weird to me.

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Diggsey
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Posted: 8th Dec 2010 16:24 Edited at: 8th Dec 2010 16:24
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C is closer to ASM, and variable argument lists are very easy to do in ASM, so...

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BearCDP
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Posted: 9th Dec 2010 00:32
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I suppose that does make sense then I have yet to touch ASM. Next semester!

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Michael P
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Posted: 10th Dec 2010 13:46
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I did the test. Was very easy - each question was individually timed and it was all multiple choice. Sometimes it would ask me to say what some code does, so I just typed it out and compiled it .

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