C Language Basic to Advance Course > Working with User Defined Functions

User Defined Functions- Types of Parameters

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No-argument and no-return-value functions. Functions with no arguments and return values are classified as category 2. Functions with arguments but no return values fall into category 3. Functions with arguments and return values fall within category 4.

There can be 4 different types of user-defined functions, they are:

  • Function with no arguments and no return value.
  • Function with no arguments and a return value.
  • Function with arguments and no return value.
  • Function with arguments and a return value.

In order to establish the function, it has three linked elements. Function declaration. call to a function Definition of the function.

User-Defined Basic Functions A user-defined function in its most basic form is one that does not require any parameters to fulfil its work. The calling script or user-defined function does not receive any values from these functions. A "void" function is the name given to this type of function.

A common data type that we can derive from any existing data type in a programme is the UDT (User-Defined Data Type). We can use them to extend the built-in types that are already included in a programme, and then we can develop our own unique data types.

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