TAILIEUCHUNG - Chapter 3 Function Basics

Transfers control back to "calling" function For return type other than void, MUST have return statement Typically the LAST statement in function definition return statement optional for void functions. | Chapter 3 Function Basics Learning Objectives Predefined Functions Those that return a value and those that don’t Programmer-defined Functions Defining, Declaring, Calling Recursive Functions Scope Rules Local variables Global constants and global variables Blocks, nested scopes Introduction to Functions Building Blocks of Programs Other terminology in other languages: Procedures, subprograms, methods In C++: functions I-P-O Input – Process – Output Basic subparts to any program Use functions for these "pieces" Predefined Functions Libraries full of functions for our use! Two types: Those that return a value Those that do not (void) Must "#include" appropriate library ., , (Original "C" libraries) (for cout, cin) Using Predefined Functions Math functions very plentiful Found in library Most return a value (the "answer") Example: theRoot = sqrt(); Components: sqrt = name of library function theRoot = variable used to assign "answer" to =

• Kỹ thuật lập trình
• Predefined Functions
• Using Predefined Functions
• The Function Call
• More Predefined Functions
• Predefined Void Functions
• Programmer Defined Functions
• C++ programming
• Lecture C++ programming
• Lập trình C++
• Ngôn ngữ lập trình C++
• User defined functions