The default data type for floating-point numbers is Double, and the keywords True and False specify a Boolean constant. A numeric integer literal is cast by default to the Integer data type. The compiler determines the type of the constant from the type of the expression.
When Option Infer is On or Option Strict is Off, you can declare a constant without specifying a data type with an As clause. In the following example, the data type of MyByte is explicitly declared as data type Byte: When Option Infer is Off and Option Strict is On, you must declare all constants explicitly with a data type. A constant is a meaningful name that takes the place of a literal and retains this same value throughout the program, as opposed to a variable, whose value may change.
Constant and Literal Data Types (Visual Basic)Ī literal is a value that is expressed as itself rather than as a variable's value or the result of an expression, such as the number 3 or the string "Hello".
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