C++ Function
This document discusses various aspects of functions in C++ including function prototypes, definitions, calls, overloading, pointers, callbacks, and templates. It provides examples and explanations of each concept. The key topics covered are: - Function prototypes declare a function's name, return type, and parameters. - Definitions implement what a function does through code within curly braces. - Functions are called by name with appropriate arguments. - Overloading allows different functions to have the same name based on different parameters. - Function pointers allow functions to be passed as arguments to other functions. - Callback functions are functions that are passed as arguments to be called later. - Templates define functions that operate on different data
C++ Function
- 2. Agenda Function Prototype Function Definition Function Call Function Overloading Function Pointer & Callback Function Function Template
- 3. © 2000 Prentice Hall, Inc. All rights reserved. Basics of a Typical C++ Environment Phases of C++ Programs: 1. Edit 2. Preprocess 3. Compile 4. Link 5. Load 6. Execute Loader Primary Memory Program is created in the editor and stored on disk. Preprocessor program processes the code. Loader puts program in memory. CPU takes each instruction and executes it, possibly storing new data values as the program executes. Compiler Compiler creates object code and stores it on disk. Linker links the object code with the libraries, creates a.out and stores it on disk Editor Preprocessor Linker CPU Primary Memory . . . . . . . . . . . . Disk Disk Disk Disk Disk
- 4. Function Prototype return_type function_Name( paramet er type list ); Example int sum( int a, int b); double minus( double a, double b);
- 5. Function Definition return_type function_name( parameter list) { declarations statements } Example int sum( int a, int b ) { return a + b; } double minus( double a, double b ) { ret urn a – b; }
- 6. Function Call Example sum( 3, 5); minus( 5.5, 6.6 );
- 7. Function Overloading Parameter list Ex: int max(int, int); float max(int, int); Overload Resolution Overload.cpp
- 8. Function Pointer Example f(x) = x2 f(x) = x3 ….. FunctionPointer.cpp What else? ∑ )(xf
- 11. The Window Procedure callback
- 12. Function template Algorithm-based Functions. FunctionTemplate.cpp
- 13. References A Book on C, 4ed, Al Kelley, Ira Pohl C: How to Program, 3rd, Deitel & Deit el