void pointer

[janus]

Hello All,

I am aware that void pointer (or generic pointer) could be use in
function arguments and as the return type of a function.

void * swap1(void * lpr1, void * lpr2,...);

Is there any other place it may be used? If yes, please give
examples.

Regards,
Janus

 

[Nick]

Hello All,

I am aware that void pointer (or generic pointer) could be use in
function arguments and as the return type of a function.

void * swap1(void * lpr1, void * lpr2,...);

Is there any other place it may be used? If yes, please give
examples.

This smells slightly like a homework problem. But the answer is that it
may be used anywhere you are keeping or transferring a pointer without
dereferencing it. To and from a function is an obvious such place, but
inside a storage container of some sort is another.

Example:

char *p;
void *q = p;
char *w = q;

That's pointless, but you asked about "may", not "may usefully"...

 

[janus]

Nick,

I am not a student, I am just trying to learn C on my own. Thanks so
much.

Regards,
Janus