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INOK is a CAOS function which checks the input stream.

Usage[]

Syntax: INOK

Returns 1 if the input stream is good, 0 if it is bad. The stream is bad after the end is reached (there is no more data to read) or if it was attached to a nonexistent file.

Use only after FILE IOPE, otherwise an error occurs. This means you cannot use INOK to check whether the input stream is attached.

Examples[]

See FILE IOPE and INNL.

See also[]

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