Variable represents named storage location, whose values can be manipulated during program run. variables are called symbolic variables because they are named.
There are two values associated with a symbolic variable:
Rvalue, its data value stored at some location in the memory.
Lvalue, its location value that is the address in the memory at which its data value is stored.
rvalue of A = 10
lvalue of A = 1052
rvalue of C = 25
lvalue of C = 1055
Showing rvalue and lvalue of a variable