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SIREN.PAS
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Wrap
Pascal/Delphi Source File
|
1993-03-23
|
447b
|
35 lines
program siren;
uses crt;
var
varies : integer;
dummy : char;
begin
varies := 695;
writeln('Press a key...');
repeat
varies := 695;
sound(varies);
delay(300);
while varies > 671 do
begin
varies := varies -1;
sound (varies);
delay(1);
end;
varies := 588;
sound(varies);
delay(300);
while varies < 610 do
begin
sound(varies);
delay(1);
varies := varies + 1;
end;
until keypressed;
nosound;
dummy := readkey;
end.