f stand for in the name of C standard library functions? I have noticed that a lot of functions have an
f in their name, and this does not really make sense to me.
sqrtf and so on.
Your question in general is too general but I can explain a few examples.
fclose, … — The ”f“ stands for “file”. These functions accept or return a
FILE *pointer as opposed to a file number as the POSIX functions do.
scanf, … — The ”f“ stands for “formatted”. These functions accept a format string.
fscanf— This is a combination of the above two.
cosf, … — The “f” stands for
float(to distinguish from the
doublealternatives). Note that this fits quite nicely with suffixing floating point literals with an
- Finally, as Deduplicator points out, there are some names such as
setbuf(“set buffer”) where the “f” simply appears as a natural language character.
The tradition of pre- or suffixing names with single letters that indicate the type of the arguments is a necessity in C that has become obsolete in C++ thanks to overloading. Actually, overloading in C++ works by the compiler automatically adding those suffixes again under the hood to the generated symbols by a process called name mangling.