C + + Naming conventions

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I. Classes and Interfaces

1 . Naming: Class names begin with the capital letter "C" followed by one or more words. Capitalize the first letter of each word. The interface begins with an uppercase "I" and represents the interface.

2 . Form of composition: recommend the form of "noun" or "adjective + noun", for example: "Canalyzer", "Cfastvector" ....

Second, function

1 . Naming: The name of a function consists of one or more words. Capitalize the first letter of each word. The maximum length of the 20 characters is not exceeded.

2 . Form: The global function should use the form of "verb" or "verb + noun" (dynamic-object phrase). For example: "GetName ()", "Drawbox ()".

The class member function should use only "verbs", and the omitted noun is the object itself. For example:

"Box->draw ();".

3 . Global function: Start with the lowercase prefix "g" or "M".

4, back harmonic event handler function: The habit begins with the word "on". For example: "_ontimer ()", "OnExit ()"

Third, variable

Variables are the most frequently used identifiers in a program, and the naming conventions of variables are the most important part of a set of C + + naming conventions:

1 . Name: The variable name consists of the scope prefix + type prefix + one or more words. A variable is combined with a word that starts with a lowercase letter, and the first letter of the second word is capitalized. For example: int ndrawmode. The variable cannot be longer than 20 characters.

Special: For some simple and straightforward local variables, you can also use simplified methods such as: I, J, K, X, Y, Z

2, form: The name of the variable should use "noun" or "adjective + noun". For example: "NCode", "M_nstate", "Nmaxwidth", "OldValue", "NewValue".

3 . Scope prefix: The scope prefix indicates the visible range of a variable. There are several scopes that can be used:

Prefix	Description	Example
No	Local variables
M_	Member variable for Class (member)	Int M_width
Ms_	Static member variable of class (static member)	static int ms_initvalue;
S_	Static variable (statics)	static int s_initvalue;
G_	External global Variables (GLOBALS)	int g_howmanypeople;
Sg_	Static global variables (statically global)
Gg_	Shared data segment global variables shared between processes (World global)

Description: The scope prefix is different from the following type prefix and should be enforced resolutely. The reasons are:

1) Variable scope and link changes are rare, for example, in rare cases a member variable is changed to a static variable

2) tools used in programming often do not visually display the scope and linkage of variables

4 . Type prefix: The scope prefix indicates the visible range of a variable. The type prefix indicates the type of a variable, as follows:

Prefix	Description	Example
B	Boolean variable (bool, BOOL)	benable
Ch	Character variable (char TCHAR)	Chname
Lpsz	LPSTR, LPCSTR, LPCTSTR	LpszName
N	Integer and bit-field variables (int, uint,__int32,__int64)	Nlength
L	Long	Loffset
By	BYTE
W	Word	Wpos
Dw	DWORD	Dwrange
F	Floating-point variable (float)
D	Double
P	Pointer-type variables and iterations (pointer)	PDoc
Lp	Far pointer
E	enum-type variable (enumeration)
Pfn	Pointer variables and function object pointers, especially for pointers to functions (pointer of function)
G	Array (GRID)
H	Handle Windows Object handle	HWnd

Iv. Constants

Constant names are made up of all uppercase letters, and the words are defined by underscores, such as: DELIMITER, Max_buffer. The definition of a type prefix is the same as in a variable naming convention.

Structure, macro, enumeration variable, union

All are made up of prefix + uppercase letters, with underscores defined between words.

1 . struct: Add lowercase prefix "_" or "__", then start with uppercase letters.

Cases:

typedef struct _POINT

{

int x;

int y;

} point;

2, macro: The composition of capital letters, the use of underline between the words to define

Example: #define MAXNUMBER 100

3 . Enumeration variable: Add lowercase prefix "enum".

Cases:

typedef enum _FILE_OPEN_MODE

{

Open_readonly,

Open_readwrite

}file_open_mode;

C + + Naming conventions