what is the use of void pointer?

[Mabden]

i do not know what is the use of (e.g. void *pt), when will use it.

It's a pointer to location zero in memory, of course <gd&rvvvf> ;-)

 

[Emmanuel Delahaye]

Sandeep a écrit :

Usage : int *n = (int *) malloc(sizeof(int));

What about

Usage : int *n = malloc (sizeof *n);

- No cast required
- Reduced maintenance :

Usage : double *n = malloc(sizeof *n);

 

[Emmanuel Delahaye]

Sandeep a écrit :

K & R - Second Edition

char *p;
p = ( char *) malloc(strlen(s) + 1) ;

http://cm.bell-labs.com/cm/cs/cbook/2ediffs.html