c const

The beauty of Const is that it allows you to specify a semantic constant. You should use it as much as possible in your code, global scope, namespace, inside the class, whether it's static or non-static, and you can use it.A const object that can

turn from: http://blog.csdn.net/Eric_Jo/article/details/4138548; in C + + The use of the Const keyword is very flexible, and using the const will greatly improve the robustness of the program, I based on the information found in various aspects

1 Const int 9.8 ; 2 Const int * PE = &g_earth; // feasible 3 4 Const int 1.3 ; 5 int * pm = &g_moon; // Not OKThe experiment proves that it is forbidden to assign the address of const constant to non-const pointers in C + +. C + +

1, the Const object once created its value can no longer change, so be sure to initialize.2. The const type can only perform operations that do not change its contents, such as participating in calculations, assigning values, etc.3, if you want to

I. About General constantsthe format of the declaration or definition is as follows:Const = ; [1] Const = ; [2]The definition of [1] and [2] is completely equivalent. For example:shaping Int (or other built-in type: Float,double,char)const int

1. Pointer variables pointing to constantsA pointer variable that points to a constant is defined by:　　Const type identifier * pointer variable name;　　Such as: const int *p;The pointer variable defined by this method can read only the value of the

What does the const after const this pointer method list mean? Answer: You cannot modify member variables in a methodclass Test{public: void fun()const{ //data = 10;//编译不过，因为有const关键字，所以不可以修改this指针所指向的内容 }private: int data;};Note the point:

In the C language we work with symbolic constants in the way defined by the # define macro. In C + + there is a better way to handle symbolic constants, which is to use the Const keyword to modify the declaration and initialization of variables. The

Use of a static (scope and storage mode)1. Scope----------> HideStatic functions are similar to static global variables (static functions cannot be used by other files; functions with the same name can be defined in other files, and no conflicts

/**************************************************************** Primary Understanding: 1.const is defined as constant = = "Const means read-only 2. The following const variables must be initialized! *************************************************

The use of the Const keyword in C + + is very flexible, and using the const will greatly improve the robustness of the program, I found in various aspects of the information summarized below, hoping to help friends.Const is a type modifier commonly

1.const modifier variablesint Base=0;//Define constants (read-only variables in a class can only and must be initialize in the initialization list)//The const constant simply gives the corresponding memory address, rather than the immediate number

more and more annoying C + +, a simple const member variable is so troublesome. Concepts: const member variables, const member functions, const class variables A const member variable cannot be changed after it is initialized. Are

C ++ const qualifier Const qualifier:Use const to restrict objects so that the value of a const object cannot be changed once it is created.   When defining a const object, you must initialize it in either of the following ways:     const int x = 10；

1.const Constants and Macro constantsconst int max=100;#define MAX 100;The const constant relative to the macro constant has two a bit:1) have type security check2) Less memory footprintPosition of 2.const variable in memoryWe have explained the

Summary of C ++ const keywords and const keywords Const is a qualifier of the C ++ language, which limits that a variable cannot be changed. Using const can improve the security and reliability of the program to a certain extent. In addition, while

Const qualifier1. Use const to give literal constants a name (identifier), which is called an identifier constant, because the declaration and usage of an identifier constant is much like a variable, so it is also called a constant variable2.

As we all know, const and static readonly are really like: access through the class name instead of the object name, read-only in the program, and so on. Can be mixed in most cases.The essential difference between the two is that the value of the

C # const detailed analysis and description, Const is a key word in C language. It specifies that a variable cannot be changed. Using const can improve the security and reliability of the program to a certain extent. In addition, it is helpful to

[C #] const and readonly, The const and readonly keywords in c # seem to be the same, but they are actually different. The focus is on the time to determine the value.Const Const is a constant and cannot be modified statically. Because the field