Changes

In [[C]] and similar computer programming languages, it is used to represent "logical not" and in a pair with an equals sign (=) to represent ''is not equal to'', e.g. {{tt|1=if (a != b)}} means ''if a is not equal to b''.<ref>[http://cermics.enpc.fr/~ts/C/CONCEPT/expressions.html C Operators/Expressions].</ref>

In [[C]] and similar computer programming languages, it is used to represent "logical not" and in a pair with an equals sign (=) to represent ''is not equal to'', e.g. {{tt|1=if (a != b)}} means ''if a is not equal to b''.<ref>[http://cermics.enpc.fr/~ts/C/CONCEPT/expressions.html C Operators/Expressions].</ref>

In mathematics, the exclamation mark is typically used to represent the [[factorial]] of a whole number, n, as n!. For example, 5! can be read as "5 factorial", which means "5 times 4 times 3 times 2 times 1.

In mathematics, the exclamation mark is typically used to represent the [[factorial]] of a whole number, n, as n!. For example, 5! can be read as "5 factorial", which means 5 x 4 x 3 x 2 x 1.

==Additional Reading==

==Additional Reading==