This is a tutorial about variable scope, a variable is a means to store data within the context of the program. For example, if you wish to store a numerical value then you would not store that number in a string, but within a integer or floating point number.
There are different types of variables, integer / string etc, but the scope of a variable is the area in which the variable is defined within block of code that it is situated.
This is some c# code to demonstrate the difference between local variables and global.
---
class localvariable
{
private static int value1 = 1;
private static void global()
{
System.Console.WriteLine("Global : " + value1);
}
public static void Main()
{
int value1 = 0;
System.Console.WriteLine("Local : " + value1);
global();
return;
}
}
---
save this as localvariable.cs and then compile up the code and run. The output should be.
Local : 0
Global : 1
and as you can tell there are two value1 within the source code whilst one is the global variable and the other is local to the Main method. |
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