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Reports whether the specified I/O device is at the end of information. Whenever an I/O device reaches the end of information, and EOF flag is raised. This flag is queried by the EOF function.
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Syntax:
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EOF(generation, device)
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Parameters:
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generation: A number that represents the task's hierarchic position in the runtime task tree. 0 represents the current task, 1 its immediate ancestor, and so on.
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device: A number that represents the sequence number of the I/O device in the current task.
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Returns:
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Logical
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Example:
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EOF(0,1)returns TRUE after processing the last record of the first I/O device in the current task.
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Note:
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EOF is used for input I/O devices. It should be used as an end condition in tasks that read information from operating system text (I/O) files. The following expression when used as an end condition in a task reading from a single I/O device will cause task termination as soon as the last piece of information is read from the file: EOF (0,1)
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See also:
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EOP, Line, Page
The Online and Rich Client Samples projects (program TS09 and RTS09)
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