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Lof
Paul Squires edited this page Oct 19, 2026
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Home › File I/O Functions › LOF
Returns the length in bytes of an open file.
Declare Function LOF ( ByVal filenum As Long ) As LongIntfilenum
Returns the length, in bytes, of a file opened previously with Open using the given filenum.
With Open Com it returns the length of the data pending to be read in the receive buffer.
The length in bytes of an open disk file.
result = LOF( filenum )
- None
Dim f As Long
f = FreeFile
Open "file.ext" For Binary As #f
Print LOF(f)
Close #fCategory: File I/O Functions
Kind: function
Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.
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