Questions tagged [c]

Programming questions are off-topic here. Do not ask questions about how to write code in C. However, conceptual questions about computer science are more appropriate. See our help center for the scope of this site.

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Formal specification; Logical formula

* Initial Question * I'm trying to write a logical formula consists of three Boolean variable C1, C2, C3. My program takes graph as input and checks properties about them. C1 represents presence of ...
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1answer
734 views

Column Major Order

I have a doubt understanding How a 3-Dimensional array is stored in column Major Order. An array in Row Major order is stored like [plane][row][column] So, for finding address of any element we cross ...
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2answers
4k views

Why is C's void type not analogous to the empty/bottom type?

Wikipedia as well as other sources that I have found list C's void type as a unit type as opposed to an empty type. I find this confusing as it seems to me that <...
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1answer
828 views

Hash multiple integers directly using FNV-1a

An alternative version of FNV-1a hash spread on the internet, which operates directly on integers instead of bytes. The offset basis and prime are the same used in the original version, which operates ...
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1answer
1k views

What is the difference between the friend class and inheritance consept in C++? [closed]

In C++ ,friend class allows us to inherit the proprieties of one class to another class(es) which is also possible using inheritance. And also in inheritance we can set different levels of privileges ...
2
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1answer
187 views

What is this question asking for?-->Test this code, find an error in the program and “construct an instance to demonstrate the error” (in C) [closed]

I am learning the basics of the language C, and so far we have covered up to loops. This question is related to my assignment. The problem is I do not understand what the question is asking. I know ...
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2answers
189 views

use of C library in operating systems [closed]

I wonder, how is that operating systems make use of libraries as stdio.h if they themselves are the services? I am right? Is the operating system that interacts with the hardware to operations of I/O? ...
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0answers
686 views

Find the index of minimum number that is greater than key given of a sorted array, does these two functions return same result?

Give an array of integer has been sorted (non-decreasing order), we need find the index of minimum number number that is greater than key given, I wrote two functions, they're identical except the ...
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0answers
33 views

How is a complied program updatable? [closed]

We all know in the case of web sites, to make update just means opening the code, editing it and saving it. And to view the changes we just have to refresh the browser. But what about in the case of ...
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1answer
45 views

Simple error in C [closed]

I cannot determine why the Celsius values in this code are producing rubbish values. (Look at second statement in the first for-loop). CODE: ...
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1answer
1k views

Is the Syntax of C Language completely defined by CFGs?

I think the Question is self sufficient. Is the syntax of C Language completely defined through Context Free Grammars or do we have Language Constructs which may require non-Context Free definitions ...
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2answers
2k views

Handling untrusted string input in printf in C [closed]

I stumbled upon the MSDN Best Practices for Code Review. Under the section “Untrusted Inputs”, I found following which I didn't understand properly. Why is the following considered safe? ...

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