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Using and Porting GNU Fortran

8.6.6 Order of Statements and Lines

(Corresponds to Section 3.5 of ANSI X3.9-1978 FORTRAN 77.)

Generally, DATA statements may precede executable statements. However, specification statements pertaining to any entities initialized by a DATA statement must precede that DATA statement. For example, after `DATA I/1/', `INTEGER I' is not permitted, but `INTEGER J' is permitted.

The last line of a program unit may be an END statement, or may be:

• An END PROGRAM statement, if the program unit is a main program.

• An END SUBROUTINE statement, if the program unit is a subroutine.

• An END FUNCTION statement, if the program unit is a function.

• An END BLOCK DATA statement, if the program unit is a block data.