const const

Original post address: http://ogldev.atspace.co.uk/www/tutorial14/tutorial14.html In the previous tutorial, we placed the camera in a fixed position in the 3D space. In this chapter, we tried to control the camera and move it in any direction in the

Const summary in C ++ I. Basic statements1. Const int r = 100;// Standard const variable declaration and initialization, because the default internal connection must be initialized, its scopeFor this file, the compiler directly replaces it with 100

Q: Define a macro to compare the sizes of two numbers A and B. The statements greater than, less than, and if cannot be used.A: Define max (a, B) (a/B )? A: B // Configure //----------------------------------------------------------------------------

Document directory Qmetaobject: classname () Qmetaobject: superclass () Qmetaobject: classinfocount () Qmetaobject: classinfooffset () Qmetaobject: classinfo (INT index) Qmetaobject: indexofclassinfo () Int constructorcount () const

1. What is an index? Indexes are used to quickly search for records with specific values. All MySQL indexes are saved as B-trees. If no index exists, MySQL must scan all the records of the entire table from the first record until the required

Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> # Ifndef _ perf_timer_h _ # Define _ Perf_timer_h _ # Ifdef _ Win32# IncludeWindows. h># Else# IncludeSys/Time. h># Endif

What is the difference between nandflash and nor flash? Nor transmission efficiency is very high, in 1 ~ The small size of 4 MB has high cost efficiency, but the low write and erase speeds greatly affect its performance.The NAND structure provides a

Q: Define a macro to compare the sizes of two numbers A and B. The statements greater than, less than, and if cannot be used.A: Define max (a, B) (a/B )? A: B // Configure //----------------------------------------------------------------------------

I. Static: static is a common modifier in C ++. It is used to control the storage and visibility of variables, next I will talk about the reason and role of the static modifier, and fully analyze the essence of the static modifier. Static: 1.

(Notes for Embedded C ++ language 3) Data Pointer In the actual debugging of the embedded system, the read/write capability of the absolute address unit content is mostly achieved by using the C language pointer. Direct operation of memory with

String series in practice c ++ -- CDuiString and string Conversion (cduistring in duilib) The user who uses the duilib will surely know the cduistring type. First, let's see how this class is defined: class UILIB_API CDuiString { public:

//Main.mLessonc12//Created by Zhang Yangji on 15-1-6.Copyright (c) 2015 Zhang Yangji. All rights reserved.//#import #define KdebugWhen a variable has a fixed number of values, you can define an enumeration typeEnumeration types declare a set of

Const & pointer In the type declaration, const is used to modify a constant. There are two ways to write it. So, what are the following statements that use const to limit immutable content? 1) const is in front Const int nvalue; // nvalue is

I. Storage Area of C language programs 1. an executable program (binary file) is formed by C language code (text file). Three phases are required: compilation, assembly, and connection. In the compilation process, C language text files are used to

# Ifndef array_h# Define array_h# Include Using namespace STD;Template class Array {Public:// Constructor setArray (int sz = min );Array (const array &);Array (const elemtype *, const INT );// Operator overload setConst bool operator = (const

Keywords: const, const function, const variable, const after Function 1. bool FA (const A & A); here const indicates that variable A cannot be modified in the bool FA (const A & A) function.2. Const A & FB (int I); the return value of the const A &

Turn: http://blog.csdn.net/dotneterbj/article/details/8021200 The memory occupied by a C/C ++ compiled program is divided into the following parts: 1. STACK: the stack zone is automatically allocated and released by the compiler, and stores function

Basic explanation Const is a key word in C language. It specifies that a variable cannot be changed. The use of const can be improved to a certain extent.ProgramRobustness, In addition, watching othersCodeIt is helpful to understand the role of

Have you ever encountered a variable declaration like int * (* FP1) (INT) [10]; that puzzles you? This article will show you how to understand this complex C/C ++ statement step by step.We will start with a simple declaration that we can encounter

The const keyword does not represent a constant, but "the content cannot be modified ". The variable modified by const does not necessarily have the same value. It may be changed by external conditions that cannot be detected by the compiler. Const