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Syntax
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Write [#]
filenumber [,expressionlist]
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Description
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Writes a list of expressions to a given sequential file.
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Comments
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The file referenced by filenumber must be opened in either
Output
or
Append
mode.
The filenumber parameter is an Integer used by the Basic Control Engine to refer to the open file—the number passed to the
Open
statement.
The following table summarizes how variables of different types are written:
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Data Type
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Description
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Any numeric type
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Written as text. There is no leading space, and the period is always used as the decimal separator.
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String
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Written as text, enclosed within quotes.
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Empty
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No data is written.
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Null
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Written as
#NULL#
.
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Boolean
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Written as
#TRUE#
or
#FALSE#
.
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Date
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Written using the universal date format:
#YYYY-MM-DD HH:MM:SS#
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User-defined errors
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Written as
#ERROR
ErrorNumber
#
, where ErrorNumber is the value of the user-defined error. The word
ERROR
is not translated.
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The
Write
statement outputs variables separated with commas. After writing each expression in the list,
Write
outputs an end-of-line.
The
Write
statement can only be used with files opened in
Output
or
Append
mode.
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Example
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This example opens a file for sequential write, then writes ten records into the file with the values 10...50. Then the file is closed and reopened for read, and the records are read with the Input statement. The results are displayed in a dialog box.
Sub Main()
Open "test.dat" For Output Access Write As #1
For x = 1 To 10
r% = x * 10
Write #1,x,r%
Next x
Close
msg1 = ""
Open "test.dat" For Input Access Read As #1
For x = 1 To 10
Input #1,a%,b%
msg1 = msg1 & "Record " & a% & ": " & b% & Basic.Eoln$
Next x
MsgBox msg1
Close
End Sub
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See Also
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Open (statement); Put (statement); Print# (statement).
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