Modern C++ for Absolute Beginners: A Friendly Introduction to C++ Programming Language and C++11 to C++20 Standards

© Slobodan Dmitrović 2020

S. DmitrovićModern C++ for Absolute Beginnershttps://doi.org/10.1007/978-1-4842-6047-0_19

19. Functions

Slobodan Dmitrović¹ 

(1)

Belgrade, Serbia

 

19.1 Introduction

We can break our C++ code into smaller chunks called functions. A function has a return type, a name, a list of parameters in a declaration, and an additional function body in a definition. A simple function definition is:

type function_name(arguments) {

    statement;

    statement;

    return something;

}

19.2 Function Declaration

To declare a function, we need to specify a return type, a name, and a list of parameters, if any. To declare a function called myfunction of type void that accepts no parameters, we write:

void myvoidfunction();

int main()

{

}

Type void is a type ...