44 lines
1.4 KiB
Text
44 lines
1.4 KiB
Text
100H: /* FIND SOME PERFECT NUMBERS: NUMBERS EQUAL TO THE SUM OF THEIR PROPER */
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/* DIVISORS */
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/* CP/M SYSTEM CALL AND I/O ROUTINES */
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BDOS: PROCEDURE( FN, ARG ); /* CP/M BDOS SYSTEM CALL */
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DECLARE FN BYTE, ARG ADDRESS;
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GOTO 5;
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END BDOS;
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PR$CHAR: PROCEDURE( C ); DECLARE C BYTE; CALL BDOS( 2, C ); END;
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PR$STRING: PROCEDURE( S ); DECLARE S ADDRESS; CALL BDOS( 9, S ); END;
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PR$NL: PROCEDURE; CALL PR$CHAR( 0DH ); CALL PR$CHAR( 0AH ); END;
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PR$NUMBER: PROCEDURE( N );
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DECLARE N ADDRESS;
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DECLARE V ADDRESS, N$STR( 6 ) BYTE, W BYTE;
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V = N;
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W = LAST( N$STR );
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N$STR( W ) = '$';
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N$STR( W := W - 1 ) = '0' + ( V MOD 10 );
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DO WHILE( ( V := V / 10 ) > 0 );
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N$STR( W := W - 1 ) = '0' + ( V MOD 10 );
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END;
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CALL PR$STRING( .N$STR( W ) );
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END PR$NUMBER;
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/* TASK - TRANSLATION OF ACTION! */
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DECLARE MAX$NUM LITERALLY '10$000';
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DECLARE PDS( 10$001 ) ADDRESS;
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DECLARE ( I, J ) ADDRESS;
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DO I = 2 TO MAX$NUM;
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PDS( I ) = 1;
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END;
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DO I = 2 TO MAX$NUM;
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DO J = I + I TO MAX$NUM BY I;
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PDS( J ) = PDS( J ) + I;
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END;
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END;
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DO I = 2 TO MAX$NUM;
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IF PDS( I ) = I THEN DO;
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CALL PR$NUMBER( I );
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CALL PR$NL;
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END;
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END;
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EOF
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