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Constant

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, such as 25 or 3.6
  • a character, such as a or $
  • a character string, such as “this is a string”

Source: https://www.webopedia.com/