After watching the precedence short I was left with that question.
For any variable/identifier
&x is a way to get the address of the memory block where it is stored.
Lets take a deeper look, Consider we have declared and initialized
int a = 10;
For any data in any language, there are 3 sorts of things associated with it :
The Data Value - Its the value of the entity you are dealing with. In the above example, we have it as 10.
Memory Location - It is the address of memory block where the data is stored. Its a hexadecimal value and can be retrieved by prepending the identifier name with
&. For eg.
cout<<&a;. Hexadecimal values start with
0xand can be
[0-9a-f]+. Unlike the example above(its too short), it can have a value as
Identifier - Its the name you use to specify that memory block. Everytime the compiler hits a identifier, it shall read that memory block(can even write). Here,