Function tutorial in c programming

                INDEX

Syntax of function in c

What is function?

  FUNCTION NAME:

Name of function includes only alphabets, digit and underscore.

First character of name of any function must be an alphabet or underscore.

Name of function cannot be any keyword of c program.

Name of function cannot be global identifier.

Name of function cannot be exactly same as of name of function in the same scope.

Name of function is case sensitive

  Name of function cannot be register Pseudo variable

  Features of function name

  FUNCTION RETURN TYPE:

  Function returning Pointer to user defined data type

Function which is returning pointer to pointer

Function returning pointer to derived data type

Function returning pointer to void i.e. generic pointer

Function returning pointer to double

Function returning pointer to float

Function returning pointer to integer

Function returning pointer to character

Function which is returning pointer

Function which is returning void data type

Function which is returning double data type

Function which is returning floats data type

Function returning pointer to array

Function returning pointer to enum

Function returning pointer to union

Function returning pointer to structure

Function which is returning pointer to function

Function returning int data type

Function which is returning char data type

Return type of function

Features of return type of function

  Function Parameter

What is Ellipsis or …?

Parameter passing convention: pascal and cdecl

Parameter passing convention

Feature of function’s parameter

Features of function parameter

Parameter passing convention of function

How to pass parameters in the function

Function in c with no parameter and not returning

Function in c has parameter but not returning any

Function in c with parameter and returning a value

What is Ellipsis or …?

Parameter of function

  FUNCTION RECURSION

Important points about function recursion

How can we find the output of recursion program  

Function recursion

Function recursion

Function recursion

Important points about function recursion 

  FUNCTION DECLARATION

What is declaration of function?

  LIBERAY FUNCTION

How to make user defined function as library function

COMPLEX FUNCTION

Complex functions

Pointer to function

  OTHER GOOD TOPICS

  Why we should use the function?

Function overloading

typedef of function

  How to calculate size of a function?

  What is prototype of a function?

Function standards

How to calculate size of a function

Dummy functions

Renaming of function

Nesting of function call

Why we should use the function?

  What is main function?