C99 is the latest standard of the general purpose C programming language. It was adopted as an ANSI standard in the year 2000.
Questions tagged [c99]
12 questions
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Does C99 make the K&R book outdated? If so what to recomend in its place?
C99 has been with us for a while now. It introduces a lot of features that are not in K&Rs The C Programming Language. None of them are particularly radical. However, even small features like being able to intermingle declarations and code change…
Justin Dearing
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Definition of portable C
I have been having a huge and heated argument with someone on a slack group - the debate is this :
My argument
Portable code is that which compiles with various compilers and runs exactly the same on various architectures without modification.
If…
rep_movsd
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Static vs. non-static? (with non-OOP functions)
Although this question has come up before, mine is different because it is not supposed to cover anything OOP but only plain (ANSI) C.
Especially in open-source software, I usually encounter a plethora of functions (please don't call them methods…
syntaxerror
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What situations are appropriate for C# to C interop?
Given that C# has the unsafe keyword, are there situations in which it would still be beneficial to interoperate with C libraries?
I could see the need for very fast number crunching, graphical manipulation or matrix operations, using pre-existing C…
Robert Harvey
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Which version of C should I learn?
It looks like K&R "C Programming Language (2nd Edition)" covers ANSI C, but another book that I'm starting (Stephen G. Kochan "Programming in C") says that it uses C99.
I'm coming from a C#/JavaScript/Python/PHP/Java background and looking to round…
Nogwater
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Should one avoid or be careful with C99 features in C code?
Some seem to say that one should avoid C99 features in C code as compilers don't really support those features. C99 is a standard from 1999, shouldn't these features be quite widespread now?
Should one avoid using C99 features in new code? In legacy…
Anto
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How to make my educational dynamic array C library less verbose to use?
I really like to make tools prior to starting some assignment, so for the C programming assignments I have prepared dynamic array library. We are restrained to only using C99 standard.
Note that all programming I'm describing below is, as per…
Tomáš Zato
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Complex iterators in C
note: this was originally asked on SO.
Part of my current project involves iterating over sequences that don't necessarily exist. For example, I have something similar to a relational database in memory, so say I have three arrays
typedef struct {…
Gage
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C99: Alternative to "static" variable declaration?
By coincidence I stumbled over "The New C Standard" from Derek M. Jones, where he comments this sentence from the C99 standard regarding "storage duration of objects":
There are three storage durations: static, automatic, and allocated.
His…
mic
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Memory/cache performance in working with arrays in C
I've been toying with some array examples in C. I want to understand more about memory concepts, alignment, and cache. Especially on large arrays on heap. Sometimes I work on large images (extremely large) so that's why it's important to me, but it…
Keyframe
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Function naming design in a C Library
I'm writing a C (c99) library that operates on strings. I'm having a design problem writing functions that will perform in different modes.
For example; the Find function can search for:
the first, last, n-th element
different letter case
return…
reader
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Why are zero length VLAs allowed in C99, but not in C11 any more?
In the comments to this former question, there was a discussion if the C standard allows variable length arrays (VLAs) of length 0 or not. As it turns out, the C99 standard states:
In 6.7.5.2 Array declarators, Constraints:
"If the expression [for…
Doc Brown
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