An exclamation mark (!), also called an exclamation point, is a punctuation mark. It is used to show strong emotion at the end of a sentence or after an interjection.
An exclamation mark (!), also called an exclamation point, is a punctuation mark. It is used to show strong emotion at the end of a sentence or after an interjection.
The exclamation mark is made by putting a vertical line over a period. It is thought that it came from the Latin exclamation io, which shows joy. Over time, the I got put above the o and later the o became a dot.
In coding, "!" sometimes means not. In mathematics, the use of an exclamation mark can be used for the factorial function (for example, ).
