jus curious

[Obelisk]

I was reading today on strings..
I came across a code with this line

int countem( char ** ptr)

ignore the function name

I want to know abt the parameter

I knew abt char *ptr where its a pointer but what does ** indicate ?/...can i know
any advice is appreciated thnx

[laserlight]

Pointer to a pointer.

[Obelisk]

oh ..thnx but why do we need them?..i read it online but i can do with some help.thnx once agn

[Elysia]

Just as if you would like to assign an integer variable in another function, perhaps you want to assign a pointer in another function, hence you would need a pointer to that pointer.