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The typedef is an advance feature in C language which allows us to create an alias or new name for an existing type or user defined type. The syntax of typedef is as follows: Syntax: typedef data_type new_name; ... new_name : alias or new name you want to give to any existing type or user defined type.

Every variable has a data type. typedef is used to define new data type names to make a program more readable to the programmer. For example: | main() | main() { | { int money; | typedef int Pounds; money = 2; | Pounds money = 2 } | }

When dealing with function pointers, the typedef allows for a simpler syntax. When function pointers are utilised in more sophisticated settings, such as as parameters to functions, this becomes more evident. Functions can also return function pointers, and the usage of a typedef helps simplify the syntax in this case.

The typedef keyword in the C programming language allows users to give alternate names to primitive (e.g., int) and user-defined (e.g., struct) data types. Remember that this term just changes the name of an existing data type, not creating a new one.

We can give datatypes symbolic names with typedef, but not integers or other objects. A macro, on the other hand, can represent 1 as ONE, 3.14 as PI, and so on. When using typedef, we might have the same type name and variable name. Compiler distinguishes between the two.

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