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GET (File I/O) Statement Programming Example
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GET (File I/O) Statement Programming Example
The following program opens the file TESTDAT2.DAT for random
access and displays the contents on the screen.
' Read and display the contents of a file containing a
' name of up to 20 characters and a test score.
'
' Define record fields.
TYPE TestRecord
NameField AS STRING * 20
ScoreField AS SINGLE
END TYPE
' Define a variable of the user type.
DIM Rec AS TestRecord
'********************************************************************
' This part of the program is an insert whose only function is to
' create a random-access file to be used by the second part of the
' program, which demonstrates the CVSMBF function
'********************************************************************
OPEN "TESTDAT2.DAT" FOR RANDOM AS #1 LEN = LEN(Rec)
CLS
RESTORE
READ NameField$, ScoreField
I = 0
DO WHILE UCASE$(NameField$) <> "END"
I = I + 1
Rec.NameField = NameField$
Rec.ScoreField = ScoreField
PUT #1, I, Rec
READ NameField$, ScoreField
IF NameField$ = "END" THEN EXIT DO
LOOP
CLOSE #1
'
DATA "John Simmons", 100
DATA "Allie Simpson", 95
DATA "Tom Tucker", 72
DATA "Walt Wagner", 90
DATA "Mel Zucker", 92
DATA "END", 0
' Open the test data file.
'
DIM FileBuffer AS TestRecord
OPEN "TESTDAT2.DAT" FOR RANDOM AS #1 LEN=LEN(FileBuffer)
' Calculate number of records in the file.
Max = LOF(1) / LEN(FileBuffer)
' Read and print contents of each record.
FOR I = 1 TO Max
GET #1, I, FileBuffer
PRINT FileBuffer.NameField, FileBuffer.ScoreField
NEXT I
CLOSE #1
END