is for C source code editing, completions, formatting, compiling, folding, searching, executing, syntax checking, debugging, and other modern IDE features that Emacs supports.

Use the tag for C and Related Modes, which include C, C++, Objective-C, Java, CORBA IDL, Pike and AWK modes.

Emacs also provides basic support of programming through the .

There are separate tags for and as well.

Useful Links: