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What does extern mean in a function declaration?

Date: Fri-Jun-17-2016-
Response
2
Using extern in a function declaration we can make a function such that

it can used

outside the file in which it is defined.

An extern variable, function definition, or declaration also makes the

described

variable or function usable by the succeeding part of the current source file.

This

declaration does not replace the definition. The declaration is used to

describe the

variable that is externally defined.

If a declaration for an identifier already exists at file scope, any extern

declaration of

the same identifier found within a block refers to that same object. If no

other

declaration for the identifier exists at file scope, the identifier has

external linkage.1

Date: Fri-Jun-17-2016
Response
What is 1 + 100



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for restaurants, kiosk, and any other retails business completely free. It can be used as windows cashier system or as full blown POS. You will able to print to kitchen, display orders on the kitchen screen, manage inventory, employee, report, customer loyalty offers, employee management, delivery address track and much more, all for free.

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