! PROGRAM P62 ! ! IMPLICIT NONE INTEGER :: I,J ! INTERFACE SUBROUTINE SWAP(I,J) IMPLICIT NONE INTEGER, INTENT(IN OUT) :: I,J END SUBROUTINE SWAP END INTERFACE ! PRINT *, 'This is Program >> P62 - Subroutine SWAP' ! ! ! Tell program where data for READ * is coming from OPEN(UNIT=5, FILE='P62.DAT') ! UNIT=5 is the default input ! READ *,I,J PRINT *,I,J CALL SWAP(I,J) PRINT *,I,J STOP END PROGRAM P62 ! SUBROUTINE SWAP(I,J) ! This routine will interchange any 2 INTEGER numbers IMPLICIT NONE INTEGER, INTENT(IN OUT) :: I,J INTEGER :: K K=I I=J J=K RETURN END SUBROUTINE SWAPDATA:
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+--------------------------------------------------+ | 32-bit Power for Lahey Computer Systems | | Phar Lap's 386|DOS-Extender(tm) Version 7.0 | | Copyright (C) 1986-94 Phar Lap Software, Inc. | | Available Memory = 14880 Kb | +--------------------------------------------------+ This is Program >> P62 - Subroutine SWAP 47 39 39 47
{$G256} {$P512} {$D+} PROGRAM p62 (input, output); VAR i, j : INTEGER; PROCEDURE swap ( VAR i, j : INTEGER ); VAR k : INTEGER; BEGIN k := i; i := j; j := k END; BEGIN readln ( i, j ); swap ( i, j ); writeln ( i, ' ', j ) END.DATA:
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Last modified: 22/07/97