const

[C ++ learning notes] const qualifier, learning notes const The main reference for learning the const qualifier is the typical textbook C ++ primer. This document is purely a learning note, and the quotation marks in the sentence below are the

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.

Summary of const usage in C + + author Jukevin 1. Const modifier Ordinary variables and pointers const modifier variable, generally have two kinds of writing: const TYPE value; TYPE const value; The two types of writing are essentially the same. It

1. pointer to the const objectWe can use a pointer to modify the value of the object it refers to. However, if the pointer points to a const object, it is not allowed to use a pointer to change the const value it refers. C ++ requires that the

(1) Example: 1. Int I = 1;Const int * cptr = & I;* Cptr = 2; // error. cptr points to constant 1.Cout 2. Int I = 1;Const int * cptr = & I;I = 2; // normalCout 3. Int I = 1, TT = 8;Const int * cptr = & I;Cptr = & tt; // normalCout To sum up, the only

  View articles     C ++ static, const, and static const and their initialization C ++ static, const, and static const and their initialization(17:27:47)Reprinted Tags:Cstaticconst initialize it

the class's member function is followed by a const, which indicates that the function does not make any changes to the data members of the class object (accurately, non-static data members) .When designing a class, one principle is to add a const to

Today, a former colleague went to the interview. Come back and talk about it. What does const do after a function. I am confused. Detected knowledge vulnerabilities. Hurry up for tutoring. So find the following text from:

1. Const modifier common variables and pointersConst-Modified variables are generally written in two ways:const TYPE value;TYPE const value;The two formulations are essentially the same. The meaning of this is that the const-modified variant of type

  A simple example Int & B (int & n) { N ++; Return n; } Int main () { Int a = 10; Int & B = B (a); // call B and pass the reference of. // In B, n refers to, // Return n; return; // The reference of a is returned to B, and B is // Operations on n

This is a tough thing to remember, because it has never been used. To sum up, I will not check it on C ++ primer later. Const pointers are classified into three types: 1. pointer to the const object (1) definition form: const double * PT; // const

Defined The Const keyword is scoped to the type of the variable. The value of a const-modified variable cannot be changed (it can no longer be assigned after initialization), for example:const int NUM1 = 1;NUM1 = 1; Errorconst indicates that

1. Top-level const and underlying const conceptThe pointer itself is an object, because the pointer actually corresponds to a piece of storage space of the memory unit, however, the pointer is also a data object, so the pointer is a constant and

Using the const method to use the c pointer (6) and the const method to use the const Method (6) Use of const Const in c expresses the meaning of "constant", which is more accurate to the meaning of "read-only. When a const encounters a pointer, it

Const is a commonly used type modifier in C + +, which refers to a type that is described using the type modifier const, and the value of a variable or object of a constant type cannot be updated. 1. Defining constants(1) The const modifier

Http://www.cnblogs.com/xudong-bupt/p/3509567.htmlC + + const allows a semantic constraint to be specified, and the compiler enforces this constraint, allowing the programmer to tell the compiler that a value is unchanged. If there is a value in

Const is a New Keyword introduced in C ++, which brings great convenience to C ++ programming. The pointer to the const object and the const pointer are two very similar concepts. They are very easy to confuse for beginners. 1. pointer to the const

Const usage summary in C/C ++ I.constBasic functions and usage 1. Declare the qualifier as read-only The usage is as follows: add a keyword before/after the typeconst, The variable must be initialized; otherwise, the compilation is incorrect; the

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 static modifiers, the essence of the static modifier is comprehensively analyzed. Static: I. Control

I. Role of const: 1. Modify the value specified by const Ex1.1: Const int a = 2; // A = 3; error: assignment of read-only variable Just like a macro in C language, a will be put into the symbol list, but a is an internal link (internal link refers