Created: 2023-01-10 15:37
Status: #concept
Subject: Programming
Tags: C Lvalue Expression

Variable

They are containers for data values, with their own Memory Addresses.

they are sometimes referred to as Lvalues since Rvalues are assigned = to them Lval = Rval.

The Attributes Include:

There are Scalar Variables and Aggregate Variables.

Programming

they are used to store data temporarily during program execution - to do calculations before producing an output.
they have different C Data Type with corresponding byte sizes in order to be allocated using memory.
A named variable becomes a unique Identifier during program execution and cannot reuse the same name again.
We can assign Constants or Expressions to variables.

We normally have to Initialize variables in order to avoid errors.