Answer Posted / sanath

Storage class determins the life time of the storage of an
identifier.
where the identifier is stored is determined by storage
class
Identifier means name given to a variable or a function.

There are 2 storage classes
1.Automatic storage class
2.static storage class

Automatic storage class
-----------------------
Variables declared within a function body are called
automatic variables.Auto is the keyword used to declare
automatic variables. By default and without the use of auto
keyword, the vaeiables inside the function are automatic
variables.auto matic variables are stored in stack.
Variables declared as register are also automatic they
are stored in fast registers of CPU.If sufficient number of
registers are not available, the register variables also
stored in stack.
When the function is calling these variables are
allocating memmory automatically. When the function is
finished and exits, the controll trnsfered to the calling
program the memory allocated will be destroyed.
2.Static storage class
-----------------------

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