and, or, not versus &&, ||, ! [closed]

Answer 1

Because they don't allow mixed C/C++ code without including additional header files, are less known to programmers, and it's not immediately clear whether and is the short-circuit or bitwise version.

Answer 2

Why nobody? Some use them. Others think that symbols are more readable than words.

Answer 3

People just don't know about them(I didn't until now).

Answer 4

Visual C++ does not support them.