FOPTNUM

FOPTNUM

Returns the number of information items that are available for an external file

Category: External Files

Syntax
Argument
Details
Comparisons
Examples
See Also

Syntax

FOPTNUM(file-id)

Argument

file-id: specifies the identifier that was assigned when the file was opened, generally by the FOPEN function.

Details

Operating Environment Information: The number, value, and type of information items that are available depend on the operating environment. [cautionend]

Comparisons

Use FOPTNAME to determine the names of the items that are available for a particular operating environment.
Use FINFO to retrieve the value of a particular information item.

Examples

This example opens the external file with the fileref MYFILE and determines the number of system-dependent file information items available:

%let fid=%sysfunc(fopen(myfile));
%let infonum=%sysfunc(foptnum(&fid));

See Also

Functions:

DINFO

DOPTNAME

DOPTNUM

FINFO

FOPEN

FOPTNAME

MOPEN

See the Examples in the FOPTNAME Function.

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