`void` keyword as function parameter
Posted on 14 Jan 2014
While wading the Linux source code (specifically arp.c), I noticed that
several function declarations used the void keyword as a parameter, like:
static int arp_proc_init(void);
void __init arp_init(void);
According to StackOverflow, using void in this way
achieves “consistent interpretation of headers that are shared between C and
C++”.
In C:
void foo()means “a functionfootaking an unspecified number of arguments of unspecified type”
void foo(void)means “a functionfootaking no arguments”
In C++:
void foo()means “a functionfootaking no arguments”
void foo(void)means “a functionfootaking no arguments”
In short, this usage of the void keyword specifies an empty parameter list in
files which will be used in C.