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Why is %c used in C? - Stack Overflow
While it's an integer, the %c interprets its numeric value as a character value for display. For instance for the character a: If you used %d you'd get an integer, e.g., 97, the internal representation of the character a. vs . using %c to display the character 'a' itself (if using ASCII)

.c vs .cc vs. .cpp vs .hpp vs .h vs .cxx - Stack Overflow
Historically, the first extensions used for C++ were .c and .h, exactly like for C. This caused practical problems, especially the .c which didn't allow build systems to easily differentiate C++ and C files. Unix, on which C++ has been developed, has case sensitive file systems. So some used .C for C++ files.

c - what is the reason for explicitly declaring L or UL for long values ...
When a suffix L or UL is not used, the compiler uses the first type that can contain the constant from a list (see details in C99 standard, clause 6.4.4:5.

Is there something like the official C documentation?
I'm looking for the documentation of all the syntax and built-in functions in C, but I can't find any site online which seems like an ultimate official source of standard C knowledge.

How do you implement a class in C? - Stack Overflow
C isn't an OOP language, as your rightly point out, so there's no built-in way to write a true class. You're best bet is to look at structs, and function pointers, these will let you build an approximation of a class. However, as C is procedural you might want to consider writing more C-like code (i.e. without trying to use classes).

c - What is the difference between NULL, '\0' and 0 ... - Stack Overflow
At least, that's how I've seen it used. The null pointer is often defined as 0, but this depends on the environment you are running in, and the specification of whatever operating system or language you are using. In ANSI C, the null pointer is specified as the integer value 0. So any world where that's not true is not ANSI C compliant.

Online C reference manuals - Stack Overflow
I would recommend reading through the comp.lang.c FAQ at least once to help get the rust off. For reference material, you might want to grab a copy of the C Standard, the latest version of C99 with TC3 included is available for free here, for C89 the last draft version is available as a text file or you can pick up a copy of the The Annotated ANSI C Standard for a few bucks and have a hard ...

Names of the C family of languages - Stack Overflow
C++ is not the second version of C. C++ tried to add classes, templates and a few more things. Quote from Wikipedia regarding the naming of C++: According to Stroustrup: "the name signifies the evolutionary nature of the changes from C".[5] During C++'s development period, the language had been referred to as "new C", then "C with Classes".

Simple C example of doing an HTTP POST and consuming the response
I would like to create a very simple C application that does an HTTP post. It will take a few parameters, and use these to construct a URL. I'd just like to do a simple HTTP POST and get the response without the use of curl (the libraries are not and will not be installed on the machine this needs to run). Pseudo-code: Process 2 args

Try catch statements in C - Stack Overflow
@Heroman C doesn't have exceptions at all. C++ has exceptions but their use is generally discouraged; and unlike Java and .NET, there is no language-standard exception base type (i.e. you can throw anything, not just subclasses of std:exception).