Variables and Types
Variables are
basically memory locations, which hold some value in them. They are always
assigned unique name for identification.
The Quantity that changes during the
execution of a program is called a variable. Therefor variables are also called
as identifiers.
Rules for forming
variables name: -
# The first character of
a variable name must be an alphabet or an under score (_).
# Both upper case & lower-case
variable are significant in ‘C’.
# Keyword should not to be used as a
variable.
# Special character is not allowed.
Declaration of variables: -
The
declaration of variable in C information about: -
1-The name of a variable
2-The type of data to be stored by the
variable.
Syntax: -
data
type variable name:
Ex.- int a, char b, float c;
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