Global variables are accessible through your project. Different classes, modules, and interfaces can access a variable if it is global. A Global Variable can simply be declared by putting the word Public in front of the variable. Here is an example.
Public V As String
Now anything in your whole entire project can access the variable V.
Storing global data.
Only global/static variables are, local variables aren't.
The variables which are declared outside the main() function is known as global variables and they can be used anywhere in the program. And, the variables which used declare inside the main() function is known as local variables and they can be used inside the main() function only. Example: #include<stdio.h> #include<conio.h> int x,y; // global variables void main() { int a,b; // Local variables ------------ ---------------------- --------------------- getch(); }
Global Variables Or: variables with names longer than 128 characters.
For global/static variables: yes.For auto variables: no.
Global variables are globally accessible. Java does not support globally accessible variables due to following reasons:The global variables breaks the referential transparencyGlobal variables creates collisions in namespac
No, threads do not share global variables by default. Each thread has its own copy of global variables, which means changes made to global variables in one thread do not affect the values in other threads.
Another name of global variable is "EXTERNAL VARIABLES".
Variables that are declared globally outside every program are called global variables.
Storing global data.
Global variables can be seen in all blocks of your program, when local variables are visible only within the block where it's declared.
They is not.
No.
The only disadvantage of a global variable is that you cannot directly encapsulate them. Other than that, there is no real disadvantage of global variables.
There's no global variables in Java.
Only global/static variables are, local variables aren't.
The variables which are declared outside the main() function is known as global variables and they can be used anywhere in the program. And, the variables which used declare inside the main() function is known as local variables and they can be used inside the main() function only. Example: #include<stdio.h> #include<conio.h> int x,y; // global variables void main() { int a,b; // Local variables ------------ ---------------------- --------------------- getch(); }