4.3BSD-Tahoe/usr/src/ucb/dbx/tests/pc/varparam.p

program varparam(input, output);
var i : integer;

procedure p(var i : integer);
begin
	i := 3;
	writeln('end of p');
end;

procedure q(var i : integer);
var j : integer;
begin
	p(i);
	writeln('end of q');
end;

begin
	q(i);
	writeln('end of test, i = ', i:1);
end.