Reason to Pass a Pointer by Reference in C++? -

Reason to Pass a Pointer by Reference in C++? -

under circumstances want utilize code of nature in c++?

void foo(type *&in) {...} void fii() { type *choochoo; ... foo(choochoo); }

you want pass pointer reference if have need modify pointer rather object pointer pointing to.

this similar why double pointers used; using reference pointer safer using pointers.

c++ pointers reference