- Tech know how online


In contrast to a variable, a constant represents a fixed, non-changeable value. In programming, the value of the constant should not change through the program flow.

A constant has a unique identifier, a data type and the fixed value from the value system. In programming, the identifier and the data type are agreed by declaration. This refers to the definition of dimensions

, data types and variables. Such a declaration protects the constant from changes. Typical examples of constants are tax rates such as value added tax, the number "e", "pi" or the prefix for capital "K".

Informationen zum Artikel
Englisch: constant
Updated at: 24.12.2020
#Words: 106