| [Overview][Constants][Types][Classes][Procedures and functions][Variables] | Reference for unit 'System' (#rtl) |
Close a file
Source position: line 0
procedure Close( |
var f: file |
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var t: Text |
); |
Close flushes the buffer of the file F and closes F. After a call to Close, data can no longer be read from or written to F. To reopen a file closed with Close, it isn't necessary to assign the file again. A call to Reset or Rewrite is sufficient.
Depending on the state of the \var{\{\$I\}} switch, a runtime error can be generated if there is an error. In the \var{\{\$I-\}} state, use IOResult to check for errors.
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Assign a name to a file |
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Open file for reading |
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Open file for writing |
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Write file buffers to disk |
Program Example9; { Program to demonstrate the Close function. } Var F : text; begin Assign (f,'Test.txt'); ReWrite (F); Writeln (F,'Some text written to Test.txt'); close (f); { Flushes contents of buffer to disk, closes the file. Omitting this may cause data NOT to be written to disk.} end.
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