append (NODE **q, int num) .... HELP

[iinfi]

in data structures using C ...

while adding a node @ the end of a link list

e.g
append (NODE **q, int num)


what does **q stand for ???

*q is the "address pointer" of the parameter passed ....
but what is **q

[theKonqueror]

**q stands for a pointor to a pointor.
i.e.

int i *p, **q;
p = &i;
q = &p;

Hope this will clear ur concept. Or Try 'Let Us C' from Kanetkar.

[iinfi]

Thanks a lot for ur help

if i want to display the "memory address" of a variable or pointer then whats the command in C?

is it
printf("%s",&p)

its not working but...

[lamrinnirmal]

firstly boy, to print a string use "%p"
now try out this code:

    char *s="hi";
    char *p="cu";
    printf("%p",&s);
    printf("%p",&p);

[iinfi]

Thanks A Lot For Ur Help

[lamrinnirmal]

sorry it is not to print a string it is to print a pointer
to print a pointer use the format string : "%p"