May 2003
Intermediate to advanced
808 pages
32h 24m
English
void keyword — Absence of type or function arguments
simple-type-specifier := voidThe void keyword can be used
as a type specifier to indicate the absence of a type or as a
function’s parameter list to indicate that the function takes no
parameters.
When used as a type specifier, it is most often used as a
function return type to indicate that the function does not return a
value. It is also used as a generic pointer (e.g., void*), although this usage is needed less
often in C++ than in C.
C++ does not require that void be used to indicate that there are no
function parameters, but it is often used in this way for
compatibility with C.
voidfunc(void) { std::cout << "hello, world\n"; }