In this chapter you’ll:

• Construct programs modularly from functions.

• Use common math library functions.

• Use function prototypes to declare a function.

• Use random-number generation to implement game-playing applications.

• Use C++14 digit separators to make numeric literals more readable

• Understand how the visibility of identifiers is limited to specific regions of programs.

• Understand how the function call/return mechanism is supported by the function-call stack and activation records.

• Understand the mechanisms for passing data to functions and returning results.

• Use inline functions, references and default arguments.

• Define with the same name overloaded functions that perform different tasks based on the number and types of their arguments.

• Define function templates that can generate families of overloaded functions.

• Write and use recursive functions.