What are the different types of function in c plus plus programming?

Answer 1

There are five types of functions and they are:

1. Functions with no arguments and no return values.
2. Functions with arguments and no return values.
3. Functions with arguments and return values.
4. Functions that return multiple values.
5. Functions with no arguments and return values.

Functions with no arguments and no return value.

A C function without any arguments means you cannot pass data (values like int, char etc) to the called function. Similarly, function with no return type does not pass back data to the calling function. It is one of the simplest types of function in C. This type of function which does not return any value cannot be used in an expression it can be used only as independent statement.

Functions with arguments and no return value.A C function with arguments can perform much better than previous function type. This type of function can accept data from calling function. In other words, you send data to the called function from calling function but you cannot send result data back to the calling function. Rather, it displays the result on the terminal. But we can control the output of function by providing various values as arguments. Functions with arguments and return value.This type of function can send arguments (data) from the calling function to the called function and wait for the result to be returned back from the called function back to the calling function. And this type of function is mostly used in programming world because it can do two way communications; it can accept data as arguments as well as can send back data as return value. The data returned by the function can be used later in our program for further calculations. Functions with no arguments but returns value.We may need a function which does not take any argument but only returns values to the calling function then this type of function is useful. The best example of this type of function is "getchar()" library function which is declared in the header file "stdio.h". We can declare a similar library function of own. Functions that return multiple values.So far, we have learned and seen that in a function, return statement was able to return only single value. That is because; a return statement can return only one value. But if we want to send back more than one value then how we could do this?

We have used arguments to send values to the called function, in the same way we can also use arguments to send back information to the calling function. The arguments that are used to send back data are called Output Parameters.

It is a bit difficult for novice because this type of function uses pointer

Answer 2

two types of function calls are there in C Programming

with argument and without argument

with argument -->

[function name] ([argument]);

without argument -->

[function name] ();

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Answer 3

Functions can be categorised in many different ways:

• Those that return a value and those that do not.
• Those that throw exceptions and those that do not.
• Those that change state and those that do not change state.
• Those that accept arguments and those that do not.
• Arguments passed by value or by reference.
• Global, static and local functions.
• Class member functions (static/non-static, private/protected/public).
• Friend functions.
• Virtual functions, overrides and final functions.
• Function overloads.
• Function templates.