A variable may refer to any of the following:
1. A variable is a value that varies.
2. With programming, a variable is a location capable of storing temporary data within a program. This data can then be modified, stored, or displayed whenever needed. For example, a program may have a variable named "$myvariable" with a value of 0 or null, and when a user enters data, the variable uses the inputted data as variable value.
Example of a variable
Below is an example of a variable in the Perl programming language.
my $myvariable = "Computer Hope";
print "There is hope, $myvariable";
In the above example, the $myvariable has an expression (value) of "Computer Hope", that is used on the next line to print "There is hope, Computer Hope" to the screen.