const const

Believe that the use of MFC programming friends to CString this kind of impression should be very deep it? Indeed, the CString class in MFC is really easy to use. But if you leave the MFC framework, are there any classes that are easy to use? The

References in C + +:The reference introduces a synonym for the object. Defining a reference is similar to defining a pointer, but using & instead of *. The reference (reference) is an important extension of C + +. A reference is an alias for a

Unreal Engine 4 C + + Platformergame custom role Controller source code analysisThe official store has a platformergame the entire free game, is a scroll class parkour game. The role controller of the whole project is very interesting, can run, jump,

"Const"0. Ordinary const objects are defined in the stack space{ intten; Const int - ; ' ' B;}Result:0x22abec 0x22abe8Note: Code::Blocks + cygwin measured.1. Define the variable type so that it cannot be modified;const int e1 = 100;e1 = 1

Original link: http://blog.csdn.net/candyliuxj/article/details/7853938(1) Compilation unit (module)After compiling the code on VC or VS, and clicking the Compile button to prepare the EXE file, the compiler does two steps:The first step: compile

Chapter III:1,sozeof (int); int N_int=int_max; sizeof N_int; (optional for variable brackets)2, #include contains some types of maximum values3,count default display decimal, Cout4,bool, char, short, int, long, longlong, float, double, long double5,

1.const is used to modify ordinary variables, indicating constants, not recommended modifications, to a certain extent do not allow the modification (in fact, can be modified)Pointer constant: The pointer (the value of the variable pointed to)

When const is used in conjunction with pointers, it is easy to confuse:1. Can the const limit the pointer to other memory?2. Is it forbidden to modify the contents of the block of memory it points to by this pointer? (PS: This is said to prohibit

001 Key Words C language altogether 32 keywords 1. Declarations and definitions Before you begin to recognize a keyword, you must understand what a statement is and what defines it: Definition: (compiler) Creates an object,

1. Analysis of several C-language declarations char (*J) [20]; j = (char (*) [+]) malloc (20); J is a pointer to an array const int * GRAPE; int const * GRAPE; int * Const grape_jelly; const int * Const GRAPE_JAM;

Try to replace # define with const, enum, and inlineFirst, #define的功能Reference: http://www.crifan.com/_define_detailed/(1) #define的变体, or #ifndef, prevents duplicate references to the head file#ifdef和 #define组合, typically used in header files, to

Use const whenever possible(1) const constraint pointer, iteratorConst char* p = "ADC"; Non-const pointer,const datachar* Const p = "ABC"; Const POINTER,NON-CONST dataconst char* Const p = "ABC";//const pointer,const dataconst Std::vector::iterator

The first eye to see explicit and volatile may be one Leng Leng thought may be C11 or C14 new identifier.In fact, the volatile and const two keywords were added to the C standard when the second version of the C language was KR C, and they were two

Transferred from: http://www.cnblogs.com/xFreedom/archive/2011/05/16/2048037.html(Partially modified)Believe that the use of MFC programming friends to CString this kind of impression should be very deep it? Indeed, the CString class in MFC is

Summary of usage of the string class reproduced from http://www.cnblogs.com/xFreedom/archive/2011/05/16/2048037.html standard C + +Believe that the use of MFC programming friends to CString this kind of impression should be very deep it? Indeed, the

First, C and C + + are substantially different in structure, but syntactically identical. So in the use of time, we will often encounter some puzzling problem, think grammatical is correct, but compile time but appear a red error! For example, this

1#include 2#include 3 using namespacestd;4 5 intPARTITION (int*Const,Const int&,Const int&);6 7 intRand_int (Const int&up,Const int&lo) {8 Random_device Rd;9 mt19937 Mt (RD ());TenUniform_int_distribution<>d (up,lo); One returnd (MT); A } - -

The Decltype action is the data type that selects and returns the operand.Decltype (f ()) sum = x; The type of sum is the return type of function fIf the expression used by Decltype is a variable, DECLTYPE returns the type of the variable (including

The difference between pointers to different types is that the pointer type knows what the compiler interprets in memory content and size in a particular address (the address the pointer points to), whereas the void* pointer represents only one

C + + supplements--this pointersPrefaceWhen using C + + for object-oriented programming, this pointer is something that everyone knows. But do we really know about it? Here we discuss the significance of its existence and how to use it.This