1, can local variables and global variable duplicate?
A: Yes, the local will screen the overall situation. To use a global variable, you need to use the "::"
Local variables can have the same name as global variables, and when referenced within a
Class A{int a;//member Variablepublic static void Main (string[] args){int b;//local variable}}————————————————————————————————————————————————————————————————————————————————————————The class body is composed of 2 parts:Part is the definition of
The variable name is written in lowercase, and if it consists of more than one word, capitalize the first letter of the other words beginning with the 2nd Word.
If the name of the local variable and the name of the member variable are the same, to
Scope global variable local variable static variable external variable constant volatile variable
Scope:The scope rule tells us the valid range of a variable, where it is created, and where it
Original blog, reprint please indicate the source--Zhou Xuewei http://www.cnblogs.com/zxouxuewei/Static is used in two ways: static in process-oriented programming and static in object-oriented programming. The former applies to ordinary variables
The 1.c/c++ variable has different scopes according to the different life cycles of the defined positions, and the scope can be divided into 6 types:Global scopes, local scopes, statement scopes, class scopes, namespace scopes, and file scopes.From
In common: case-insensitive, both variables
Different points: Global variables are read-only in the system and can be modified in a configuration file
Terminology classification for MySQL variables:
1. User variable: Starting with "@" in the form
1. Can a local variable be renamed with a global variable?
A: Yes. Global blocking will be performed in some cases. To use global variables, you must use "::"
A local variable can have the same name as a global variable. A local variable with the
a local variable is a value stored in the entire class using the same memory Block. The existence of global variables is mainly due to the following reasons: 1, The use of global variables will occupy more memory (because of their lifetime), but in
The essential difference between a global variable and a local variable is the scopeTo be understood in layman's words,Global variables are declared throughout the py file and can be accessed at the global scopeA local variable is declared in a
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