1. & Operator (Address-of Operator): Purpose: The & operator is used to obtain the memory address of a variable. It essentially creates a pointer that "points to" the variable. Usage: When you place & before a variable, it returns the memory address of that variable.

2. • Operator (Dereference Operator): Purpose: The * operator is used to access or modify the value stored at the memory address that a pointer points to. This is called "dereferencing" the pointer. Usage: When you place * before a pointer variable, it accesses the value at the memory address the pointer holds.

Working Together: & and * are often used together: & creates a pointer, and * is used to access or modify the value pointed to by that pointer.