© 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 ...

Get Modern C++ for Absolute Beginners: A Friendly Introduction to C++ Programming Language and C++11 to C++20 Standards now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.