Data is often stored within a program using variables and constants. Variables. ... Constants are used for values that are unlikely to change, for example: Pi - PI ← 3.142.

Some programming languages, such as Python, enable variables to be declared and assigned a value in the same line of code. Constants A constant allows a value to be assigned a name.

7.1. Constants and Variables. Because some Lisp data objects are used to represent programs, one cannot always notate a constant data object in a program simply by writing the notation for the object ...

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In the bad old days, I only used constants as a way to assign names to values. Things like this, for example: Private Const DaysInWeek As Integer = 7 However, these days most of my variables are ...