{{selection|Short Circuit|Console Program Basics}}
[[Category:Streams]]
{{omit from|Applesoft BASIC}}
{{omit from|bc|Always prints to standard output.}}
{{omit from|Brainf***}}
{{omit from|dc|Always prints to standard output.}}
{{omit from|GUISS|Cannot customize error messages}}
{{omit from|Integer BASIC}}
{{omit from|Jack|No other output stream available.}}
{{omit from|SQL PL|It only prints in standard output. There is no way to print in standard error. Not even with "BEGIN SIGNAL SQLSTATE 'ABCDE' SET MESSAGE_TEXT = 'Hello World!'; END"}} <!-- The only way is with an external function in Java or C that prints in Standard Error -->
{{omit from|TI-83 BASIC|Same reason as TI-89.}}
{{omit from|TI-89 BASIC|no analogue to stderr, unless you count graph display vs. program IO}}
{{omit from|Unlambda|No concept of standard error (or alternate output streams in general).}}

A common practice in computing is to send error messages
to a different output stream than [[User Output - text|normal text console messages]].

The normal messages print to what is called "standard output" or "standard out".

The error messages print to "standard error".

This separation can be used to redirect error messages to a different place than normal messages.


;Task:
Show how to print a message to standard error by printing &nbsp; &nbsp; '''Goodbye, World!''' &nbsp; &nbsp; on that stream.
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