Last modified: Tuesday, January 27, 2004
In programming, a constant is a value that never changes. The other type of values that programs use is variables, symbols that can represent different values throughout the course of a program. A constant can be a number, like 25 or 3.6 a character, like a or $ a character string, like "this is a string" Constants are also used in spreadsheet applications to place non-changing values in cells. In contrast, a spreadsheet formula can produce a different value each time the spreadsheet is opened or changed.
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