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In computing devices, an exclamation point is the punctuation mark provided in standard keyboards, smartphones and other devices. Apart from the usage of indicating strong feelings while messaging or chatting, an exclamation point has a wide range of usage in computer science. In most operating systems, exclamation points are used for indicating warnings, errors and precautionary steps or statements.
An exclamation point is also known as an exclamation mark or, in the context of computing, a bang.
Some programming and scripting languages also use exclamation points to indicate warnings and errors, as well as a method to identify a non-executable line of the code/statement. In UNIX scripting, the exclamation point is used for telling the operating system which application to use for running the script. In mathematical functionalities, the exclamation point is often used as factorial and for logical negation.
On a standard computer/laptop keyboard, the exclamation point is created with a combination of the Shift key and the 1 key. In the case of smartphones and other devices, the exclamation mark is provided in the numeric or symbol section of the keyboard.