Storage classes

Hi,

What are storge classes in C++ and where are they used. I also wanted to know the difference between Static and dynamic polymorphism.

It will be great if i can get an answer to these questions.

regards
Shayad




shayadAsked:
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shayadAuthor Commented:
Edited text of question.
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KangaRooCommented:
storage-class-specifier:


auto

Specifies that the named object has automatic storage duration, ie the compiler allocates memory when an automatic is declared, and deallocates when the program execution exits the scope in which the automatic was declared.
This is the default for local objects (declared in a {} block) and function parameters.


register

Same as auto, but hints the compiler to store the object in a CPU register.


static

Specifies that the named object exists for the entire duratio nof the programm. Non local objects are static by default.


extern

Specifies that the named object is defined in another translation unit (file, module)


mutable

Specifies that the named class member can be mutated even if the object to which it belongs is declared const.

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