## 9.3.45 EOF (A)

Description: | Checks whether a file is at or beyond the end-of-file record. This specific function has no generic function associated with it. It must not be passed as an actual argument.
Class: | Inquiry function; Specific
Arguments: | A must be of type integer. It represents a unit specifier corresponding to an open file. It cannot be zero unless you have reconnected unit zero to a unit other than the screen or keyboard.
Results: | The value of the result is .TRUE. if the file connected to A is at or beyond the end-of-file record; otherwise, .FALSE..

Examples

Consider the following:

    !  Creates a file of random numbers, reads them back
           REAL x, total
           INTEGER count
           OPEN (1, FILE = 'TEST.DAT')
           DO I = 1, 20
             CALL RANDOM_NUMBER(x)
             WRITE (1, '(F6.3)') x * 100.0
           END DO
           CLOSE(1)
           OPEN (1, FILE = 'TEST.DAT')
           DO WHILE (.NOT. EOF(1))
             count = count + 1
             READ (1, *) value
             total = total + value
           END DO
    100    IF ( count .GT. 0) THEN
             WRITE (*,*) 'Average is: ', total / count
           ELSE
             WRITE (*,*) 'Input file is empty '
           END IF
    	STOP
           END

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