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
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
Mycat global auto-increment, mycat global
Auto-increment type
[Root @ node002 conf] # vi/usr/local/mycat/conf/server. xml
Meaning of each parameter:
0: Local File Auto-increment mode.
1: use mysql auto-increment.
2: Use the local timestamp to
Static can be used in either of the following ways:Process-orientedProgramDesignStatic andObject-Oriented ProgrammingStatic. The former applies to common variables and functions, and does not involve classes. The latter mainly describes the role of
There are two ways to use static: process-orientedProgramStatic in design and static in object-oriented programming. The former applies to common variables andFunction, which does not involve classes. The latter mainly describes the role of static
The difference between a static variable and a global, local variableA static global variable is formed by the description of the global variable (external variable), preceded by static. Global variables themselves are static storage, and static
Differences between global variables, local variables, static global variables, and static local variables
C ++ variables have different scopes based on different lifecycles at defined locations. They can be divided into six categories: global
Memory allocation of a program
The memory consumed by a program compiled by C + + is divided into the following sections:
1, stack area (stack)-by the compiler automatically assigned to release, store the function of the parameter values, local
1. From the scope view:1> Global variables have global scope. A global variable can be used for all source files simply by defining it in one source file. Of course, other source files that do not contain global variable definitions need to declare
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