The C++ Programming Language, 4th Edition

12. Functions

Death to all fanatics!

– Paradox

• Function Declarations

Why Functions?; Parts of a Function Declaration; Function Definitions; Returning Values; inline Functions; constexpr Functions; [[noreturn]] Functions; Local Variables

• Argument Passing

Reference Arguments; Array Arguments; List Arguments; Unspecified Number of Arguments; Default Arguments

• Overloaded Functions

Automatic Overload Resolution; Overloading and Return Type; Overloading and Scope; Resolution for Multiple Arguments; Manual Overload Resolution

• Pre- and Postconditions

• Pointer to Function

• Macros

Conditional Compilation; Predefined Macros; Pragmas

• Advice

12.1. Function Declarations

The main way of getting something done in a C++ program is to call a function ...