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In [[Programming language|computer programming]], a '''return code''' or an '''error code''' is a numbered or alphanumeric code that is used to determine the nature of an error, and why it occurred.<ref>{{Cite web|url=https://www.computerhope.com/jargon/e/errorcode.htm|title=What is an Error Code?|website=www.computerhope.com|language=en|access-date=2020-01-22}}</ref> In C programming you can find many error codes defined under the header file <error.h>. They are also commonly found in consumer electronics and devices when these attempt to do something it can't do (ie, [[Division by zero|dividing by zero]]). They can also passed off to error handlers that determine what action to take.
== In consumer products ==
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