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Added 07-21 exam

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Deco71 2022-11-16 18:08:57 +01:00
parent 1a3767b4a9
commit 81bfdb2c34
180 changed files with 0 additions and 81 deletions
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21
Ingegneria del Software/0721_39/correct.txt Normal file
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<pre>
block MarkovChain
//external function myrandom() returns a random real number in [0, 1]
parameter Real x0 = 0;
OutputReal x;
Integer countdown;
algorithm
when initial() then
x := x0;
countdown := 0;
elsewhen sample(0, 1) then
if (countdown <= 0)
then
countdown := 1 + integer(floor(10*myrandom()));
x := 1 - pre(x);
else
countdown := countdown - 1;
end if;
end when;
end MarkovChain;
</pre>

2
Ingegneria del Software/0721_39/quest.txt Normal file
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L'input di un sistema software è costituito da una sequenza di 0 (false) ed 1 (true). Ad uno 0 segue un 1 ed ad un 1 segue uno 0. Il tempo tra un valore di input e l'altro è un valore random compreso tra 1 e 10 unità di tempo.
Quale dei seguenti modelli Modelica modella meglio l'environment descritto sopra.

21
Ingegneria del Software/0721_39/wrong1.txt Normal file
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<pre>
block MarkovChain
//external function myrandom() returns a random real number in [0, 1]
parameter Real x0 = 0;
OutputReal x;
Integer countdown;
algorithm
when initial() then
x := x0;
countdown := 0;
elsewhen sample(0, 10) then
if (countdown <= 0)
then
countdown := 1 + integer(floor(myrandom()));
x := 1 - pre(x);
else
countdown := countdown - 1;
end if;
end when;
end MarkovChain;
</pre>

21
Ingegneria del Software/0721_39/wrong2.txt Normal file
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<pre>
block MarkovChain
//external function myrandom() returns a random real number in [0, 1]
parameter Real x0 = 0;
OutputReal x;
Integer countdown;
algorithm
when initial() then
x := x0;
countdown := 0;
elsewhen sample(0, 1) then
if (countdown >= 0)
then
countdown := 1 + integer(floor(10*myrandom()));
x := 1 - pre(x);
else
countdown := countdown - 1;
end if;
end when;
end MarkovChain;
</pre>