Concept

point of view in a language concept
manner:

"Can i say that printf is a command in C language?"

I think Yes bcos it's a keyword in C and only found in C (i think)

thnx for the help

why do you think it is a keyword?

Code:

---

int main()
{
        int printf = 5;
        return printf;
}

---

It is not.

I wouldn't use the term 'command' or 'keyword' for printf -- I would call it a 'C standard library function' (which was also incorporated into C++).

But how can you set a keyword as a variable name?
i think I'm lacking some basic knowlage, can anybody give me some good explanation?

keyword cannot be used as a variable name. printf is not a keyword.
it is a function name declared in the stdio.h
if this header file is not included - this function is not declared. so this name can be used for something else.

I don't say that it is a good thing to do. But still it is possible to do...

Yeah thanks Got the idea
thank you

keywords

I'm studing programming languages and concepts this year as a subject.

so in that point of view can i say "printf is a part of C"

i think it is, even though it is not a keyword, Still it is defiened as function in stdio.h header file.

any wide comment

thnx

No, it is a part of the Standard C Library, which isn't needed to make a program in C -- Consider the Linux Kernel. . .

as said before
printf is a C-standard library function.
it is declared in the stdio.h
its definition is contained in the c run-time (CRT) library, that should be linked together with the project if some of the functions from this library is used.

The VC6 for example supplies several versions of this library for release and debug, for sigle and multithreaded project as a static lib or dynamic lib

Function definition contains its body
Function declaration - only the prototype used to call it correctly.

Sorry Dumb question

but anyway it is altogether belongs to C language?

What defnition do you give to "PART" word in my question?


thnx

No, printf could be LINKED via another programming language. . . for example Assembly. Therefore it is a PART of the standard C library, in other words a conglomeration of functions needed to do standard things. . . such as I/O, memory management, etc. Long ago, just when C first started, there was no C Library. . . just C. There was a few different I/O libraries out there written in Assembly for C, however, when C first started there was no STANDARD _ANYTHING_. OR. . . no printf.

Thnx got the idea