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Posts by Lundin
The main difference between Stack Exchange and Codidact is that SE loves to spawn off hundreds of sites with lots of overlapping scopes, whereas Codiact has the category system, which means that co...
They aren't actually that different from natural language. But more verbose. Given some generic pseudo code looking like one of the C family languages: if( !egg.boiled || !egg.peeled ) { do_no...
First of all please note that polymorphism in C is clunky. It won't be pretty. We don't have this pointers, we don't have RAII, we don't have automatic constructors/destructors. Just accept that it...
It is trivial enough to test: #include <stdlib.h> #include <stdio.h> #include <errno.h> #define KNOWN_GARBAGE ((int*)~0u) int main (void) { int* ptr = KNOWN_GARBAGE; ...
I don't really see what good elementsof would do since sizeof(arr)/sizeof(*arr) is pretty idiomatic C and problem-free given that you know what you are doing, as is the case with most C code. IMO ...
"Black box testing" makes sense when dealing with opaque types so that's the first thing you should be doing and probably the most meaningful test too, so that's where you should put most of yo...
The basics of good vs bad program design All programs are divided in classes. (Or modules/abstract data types/interfaces etc - a rose by any other name.) Each class should only be concerned with i...
I don't think there are any formal names for the various versions you list. First of all, please note that output in a programming context most often refers to printing something on a screen or to...
Some new tag "software practices" just popped up, no wiki. What's the purpose of this tag and how is it useful? What exactly in software development is not "software practices"? Seems quite superfl...
Pointer conversions and aliasing First of all, C historically allows all manner of crazy pointer conversions (whereas C++ is more restrictive) between compatible and non-compatible pointed-at type...
memcpy(&y.t, &x, sizeof(x)); is a bit fishy since it would have made more sense to copy into &y or &y.s. None of this is necessarily UB however. Regarding strict aliasing, it doesn...
p is assigned a value and then it becomes indeterminate when the pointed at object has reached the end of its lifetime (C17 6.2.4). Pointers may have trap representations (C17 6.2.6.1/5) and in ca...
This question was of very poor quality and should have been closed. I closed it but someone disagreed, for reasons unknown. I'm not sure if it's an actual algorithm question or just a request for f...
Generally speaking, comparison callback functions in C are often implemented to return an integer lesser than zero, equal to zero or greater than zero - depending on if the first object is lesser t...
Someone told me that I shouldn't write "NULL pointer" with capital letters, because a null pointer and NULL are different terms. And that NULL is a "null pointer constant". What's the meaning of th...
We rather need to make a close reason for every kind of off-topic reason. In this specific case, the reason could for example be Purely subjective question rather than the old "primarily opinion-ba...
Standard library functions that should never be used: setjmp.h setjmp() Together with longjmp(), these functions are widely recogniced as incredibly dangerous to use: they lead to spaghetti ...
I propose that the following is added as off-topic: Off-topic Questions with artificial requirements and no practical use, including code golf and code obfuscation. This also covers artificial hom...
Please no. I had a bad experience of SO's failed and cancelled "Documentation" project. I raised the same concerns on the Electronics site here. I'll quote that post: The worst that can happen is ...
It is a common mistake is to mix up the concepts of operator precedence and order of evaluation. Beginner classes and books often address the former in detail, but forget to mention the latter at a...
No, it's not helpful, it's far too broad and doesn't make sense to use in combination with any other tag either. It can't be used for searching or categorizing questions either.
Please note that migrate in this context means grabbing the exact post as-is from a SE site and importing it here. This is allowed, with attribution given, as per licensing model. Codidact staff c...
EDIT: This discussion thread is mostly obsolete now that a new draft has been posted on the site. Please take further discussion & proposals to this meta post instead: Community feedback: What ...
Yes there are references and pass-by-reference in C, though the language has no explicit syntax item called "reference" like C++. In a C context, it is irrelevant that C++ happens to have something...
See Software recommendations category. Referring to my own answer there, I think these questions should only be on-topic in case the OP manages to narrow down the scope sufficiently. In case the qu...
