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DCL:MISC１:FIOLIB: File Input/Output #:Explanation of Subroutines

11.3.1 FCOPEN

1.

Function

Opens a file.

2.

Call

CALL FCOPEN(IOU,CDSN,NRL,CACT,ICON)

3.

Explanation of Parameters

IOU	(I)	I/O unit number.
CDSN	(C*(*))	File name.
NRL	(I)	Length of record.
CACT	(C*1)	Specification of I/O mode. Specify 'R' when reading and 'W' when writing.
ICON	(I)	Condition code.

4.

Notes

(a)

When a file is opened for writing, the existing file is deleted.