C++

directory of this document First, the concept of enumerations II. definitions of enumeration types Third, the definition of the enumeration variable Iv. Considerations for enumeration use V. Basic operation of enumeration

1. Macro definition#define Aspect_ratio 1.653The macro definition Aspect_ratio may never have been seen by the compiler, and may have been replaced by the preprocessor before the compiler started processing the source code. Therefore, the token name

The use of linked lists to implement the queue has its unique conditions, linked list of flexible node deletion and increase operations, especially for the implementation of the queue is a piece of cake. The use of sequential tables to implement the

Environment construction based on KubuntuSystem: Kubuntu 14.04Chinese Input method: SICM IBUs Fcitx:sougou Chinese Input Method installation is relatively complex, due to various incompatible, may appear various problems;Terminal

Recent days to do a part-time, mainly the C language and C # language encapsulated DLL, after C + + to the Java language Support, the main problem is the type conversion, which lists the common types of conversion

Part I: Referencing vs pointersmeaning of the reference : the alias of the variableNote : A variable cannot have only aliases, and must have a real variable corresponding to itReferences to base data typesThe operation of the alias itself is the

This article mainly explains that if the callback is implemented, especially in the encapsulation interface, callbacks are particularly important, we first assume that there are two programmers writing code, a programmer to write the underlying

This paper mainly makes a simple summary of C + + object model. This paper discusses the memory layout of C + + objects in the following situations.1) single general inheritance2) single virtual inheritance3) multiple inheritance4) repeat multiple

List concept-linked list is a linear table, but not sequential storage, but each node is stored in the next node pointer, the storage data elements of the data string chain up.Single-strand performance illustration:#include using namespace

#include using namespace Std;class complex{private:double _real; double _image;public:complex (double Real = 2.2,double image=1.1)//constructor {cout_real = D._real; This->_image = D._image; } ~complex () {cout_real = D._real; This->_image =

1. Comparison of output results1)Output results: 212)Output Result: 12. Although the loop was only made once, but right! X + + is a self-adding operation.2. Pointer arithmeticOutput 8,8. When the program runs, the printf statement reads from right

I. The ABI of the dynamic link librarythe compatibility of a dynamic-link library is due to the ABI (Application binary interface) of the library, which is similar to the API, but includes provisions such as the stack structure of function calls,

PiTan (PI/4) =1 and Pi=4*arctan (1)The inverse tangent function arctan () is represented in the C language as Atan (), and the code to ensure the accuracy of pi is as follows:　　Const Double 4.0 * ATAN (1.0);RoundedSometimes we need to avoid floating-

For US programmers, "variables" and "objects" can be used interchangeably with each other. -------------the opening word.Variable: Provides a storage space with a name that can be manipulated by the program. Consists of a type specifier and several

Using WebRequest and WebClient, two ways to request an application published by the HTTP service, the result is an exception.There are three kinds, 1, System.Net.WebException: The server submitted a protocol conflict. Section=responsestatusline2,

Recently, because of a project, you need to read the data into memory and do something similar to SQL. The first thing to think about is the need to use LINQ to achieve these statistical analyses. In the process of using LINQ, we find that many of

It is a programming language that needs to be compiled before it runs, builds a DLL file after compiling, and the mobile platform of this compiled process cannot be completed, so when the logic of our game changes and the C # code changes, we need

A C # key-value pair class has the following classes:①idictionary IDC = new dictionary ();②keyvaluepair par = (keyvaluepair) Shoplistcombobox.selecteditem;③hashtable ht=new Hashtable (); File creates a Hashtable instanceHt. Add (e,e); adding

Use Aforge.net to do the screen and write each bitmap to the AVI file. Super simple!Aforge. NET Screencapturestream performance is limited, at present the test basically can reach about 10 frames.Setting the Aviwriter's framerate to 8 frames, but

The same element is not allowed in the collection collection class, as in Nsset, but if it is written like this: 650) this.width=650; "Src=" http://s3.51cto.com/wyfs02/M01/71/F3/ Wkiom1xbh7od61diaaexnbskyzu907.jpg "title=" 1.jpg "alt=" Wkiom1xbh7od61