so-un-bot/Ingegneria del Software/1122_31/correct.txt

<pre>
class Monitor

InputReal x;  // plant output
OutputBoolean y;

Boolean z;
initial equation
y = false;
equation
z = (time > 20) and ((x >= 30) or (x <= 20)) ;
algorithm
when edge(z) then
y := true;
end when;
end Monitor;
</pre>