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28 lines
1.2 KiB
Markdown
28 lines
1.2 KiB
Markdown
The [SYSTEM](SYSTEM) statement immediately closes a program and returns control to the operating system.
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## Syntax
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> **SYSTEM** [return_code%]
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## Parameter(s)
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* QB64 allows a *code* number to be used after SYSTEM to be read in another program module by the [SHELL](SHELL) or [_SHELLHIDE](_SHELLHIDE) functions.
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## Description
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* This command should be used to close a program quickly instead of pausing with [END](END) or nothing at all.
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* A code can be added after the statement to send a value to the [SHELL (function)](SHELL-(function)) or [_SHELLHIDE](_SHELLHIDE) function in another module.
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* SYSTEM ends the program and closes the window immediately. The last screen image may not be displayed.
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## QBasic
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* **QBasic BAS files can be run like compiled programs without returning to the IDE when [SYSTEM](SYSTEM) is used to [END](END) them!**
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* If a program BAS module is run from the IDE, stopped by Ctrl-Break or an error occurs the QB program will exit to the IDE.
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* To run a QuickBASIC program without the IDE use the following DOS command line: QB.EXE /L /RUN filename.BAS
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## See Also
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* [SHELL (function)](SHELL-(function))
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* [_SHELLHIDE](_SHELLHIDE) (function)
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* [_EXIT (function)](_EXIT-(function)), [END](END)
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