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FORWARD.PAS
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Pascal/Delphi Source File
|
1989-06-30
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554b
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26 lines
PROGRAM forward_reference_example;
VAR number_of_times : INTEGER;
PROCEDURE write_a_line(VAR count : INTEGER); FORWARD;
PROCEDURE decrement(VAR index : INTEGER);
BEGIN
index := index - 1;
IF index > 0 THEN
write_a_line(index);
END;
PROCEDURE write_a_line;
BEGIN
WRITELN('The value of the count is now ',count:4);
decrement(count);
END;
BEGIN (* main program *)
number_of_times := 7;
decrement(number_of_times);
WRITELN;
number_of_times := 7;
write_a_line(number_of_times);
END. (* of main program *)