What are the different storage classes in the C programming language?

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Accepted Answer

The different storage classes in C programming language are auto, register, static, extern, and typedef.

Auto storage class is the default storage class for all local variables. It is automatically assigned to a variable when it is declared.
Register storage class is used to define local variables that should be stored in a register instead of RAM. It is used for variables that require quick access.
Static storage class instructs the compiler to keep a local variable in existence during the program's entire execution. It retains its value between function calls.
Extern storage class is used to give a reference of a global variable that is visible to all the program files. It is used when multiple files share the same variable.
Typedef storage class is used to define new data types. It allows the programmer to create a name for a data type.

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