Final answer:
The address operator, denoted by the symbol &, is used to obtain the memory address of a variable in C programming.
Step-by-step explanation:
The address operator, denoted by the & symbol, is used in the C programming language to obtain the memory address of a variable. It is commonly used when working with pointers in C. By using the address operator, you can assign the memory address of a variable to a pointer variable, allowing you to access and manipulate the value stored in that memory location.
For example, if you have a variable called x and you want to obtain its memory address, you can use the address operator like this: &x. This expression will give you the memory address of variable x.