FREEFILE
Contents |
Action
Returns a free Filenumber.
Syntax
bFileNumber = FREEFILE()
Remarks
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bFileNumber |
A byte variable , which can be used for opening next file |
This function gives you a free file number, which can be used for file – opening statements. In contrast to VB this file numbers start with 128 and goes up to 255. Use range 1 to 127 for user defined file numbers to avoid file number conflicts with the system numbers from FreeFile()
This function is implemented for compatility with VB.
See also
INITFILESYSTEM , OPEN , CLOSE, FLUSH , PRINT, LINE INPUT, LOC, LOF , EOF , FILEATTR , SEEK , BSAVE , BLOAD , KILL ,DISKFREE , DISKSIZE , GET , PUT , FILEDATE , FILETIME , FILEDATETIME , DIR , FILELEN , WRITE , INPUT
ASM
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Calls |
_GetFreeFileNumber |
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Input |
none |
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Output |
r24: Filenumber |
r25: Errorcode |
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C-Flag: Set on Error |
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Partial Example
Ff =Freefile() ' get file handle Open"test.txt" For Input As #ff ' we can use a constant for the file too Print Lof(#ff);" length of file" Print Fileattr(#ff);" file mode" ' should be 1 for input Do LineInput #ff , S ' read a line ' line input is used to read a line of text from a file Print S ' print on terminal emulator Loop UntilEof(ff)<> 0 'The EOF() function returns a non-zero number when the end of the file is reached 'This way we know that there is no more data we can read Close #ff
| Languages | English • Deutsch |
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