What does *& mean in a function parameter

Question

If I have a function that takes int *&, what does it means? How can I pass just an int or a pointer int to that function?

function(int *&am         


        

Answer 1

Simply: a reference to a pointer.

In C, without references, the traditional way to "relocate" a pointer, is to pass a pointer to a pointer:

void c_find(int** p, int val); /* *p will point to the node with value 'val' */

In C++, this can be expressed by the reference syntax, to avoid the awkward double dereference.

void cpp_find(int*& p, int val); // p will point to the node with value 'val'