C Programming
A preprocessor command

need not start on a new line
need not start on the first column
has # as the first character
comes before the first executable statement

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C Programming
What is function?

Function is the fundamental modular unit. A function is usually designed to perform a specific task.
All of these
Function is a block of code that performs a specific task. It has a name and it is reusable.
Function is a block of statements that perform some specific task.

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