Some variables don’t change value during the execution of program. These are constants that appear many times in your code. The constants are preferred for two reasons :
• Constants don’t change value
• Constants are processed faster than variables
The general form to declare a constant is as follows :
Const constantname [As type] =value
The As type part of the declaration is optional. If you omit it, the constant’s type is determined by the value you assign to it. Constants also have a scope and can be Public or Private.
e.g. Public Const pi as Double =3.14159265358979
Visual Basic uses constants extensively to define the various arguments of its methods and the settings of the various control properties.
-
Explain purpose of relational operators and logical operator
-
What is Purpose of the Val Function
-
Explain Order of Precedence of Operators for Calculations
-
How variables are declared in Visual Basic
-
Explain Boolean variable test for True and False. Give example
-
What effect does the location of a Dim statement has on the variables is declares
-
Variable’s Scope and Lifetime of a Variable
-
What is the general format of the statement used decisions in an application
-
What are Constants
-
What is the Continuation operator ? When is it used
Dinesh Thakur is a Columinist and designer with strong passion and founder
of Computer Notes. if you have any ideas or any request please get @me on Google+
