predefined functions in c

  C/C ++ grand all (reproduced, original post address http://www.cnblogs.com/sevencat/archive/2004/06/10/14872.html)I. Standard definition macroThe standard predefined macros are specified by the relevant language standards, so they are available

An object is called when it is instantiated. When _ construct and a function with the class name coexist, __construct will be called, and the other will not be called. 1. magic functions (13) 1. _ construct () An object is called when it is

C Language # define keywords, Conditional compilation and predefined symbolic knowledge details,I. pre-defined symbols The C standard defines the following five preprocessing symbols _ FILE _ // name of the source FILE to be compiled _ LINE

This article mainly sorts out the predefined interfaces of PHP, which are commonly used in the project process: IteratorAggregate (Iterator of aggregate Iterator), Countable, ArrayAccess, Iterator, you can refer to the following predefined

PHP predefined InterfaceIntroduction There are several predefined interfaces in PHP, And the IteratorAggregate (aggregate Iterator) IteratorAggregate extends Traversable {abstract public Traversable getIterator (void )} this interface implements a

Standard header files include: I. Standard definition ()The file contains some common definitions of the standard library, which are included automatically, regardless of which standard header file we include in the,.This file defines:L

Copy Code code as follows: /* Predefined arrays: * AUTO global variable---Super global array * * 1. Contains data from Web server, client, running environment and user input * 2. These arrays are more specific * 3. The global scope

Copy CodeThe code is as follows:/* Predefined arrays:* AUTO global variable---Super global array** 1. Contains data from Web server, client, running environment and user input* 2. These arrays are more specific* 3. The global scope automatically

C # overview of various operators and functions of operators,I. [] Square brackets ([]) are used for arrays, indexers, and attributes, and can also be used for pointers. 1. the array type is a type followed: Int [] fib = new int [100]; // create an

This article describes the internal functions provided by the system, functions libraries provided by third parties, simple code crawling, httplib2 module installation, and user-defined functions. It has good reference value. Next, let's take a look