c - Correct Hystersis -

c - Correct Hystersis -

i have temperature reading fluctuates. logic chain below right prevent boundary switching on , off?

if (temp > 50) { ac = 100% } else if (temp > 40 && temp < 50) { null; // alter nil } else if (temp > 30 && temp < 40) { ac = 50% } else if (temp > 20 && temp < 30) { null; } else if (temp > 10 && temp < 20) { ac = 25%; } else if (temp < 5) { ac = 0%; }

what null macro here? leave if body empty or write ; (like did).

if you, include such temperatures 40, 30, 20 , 10. isn't clear why omit temperatures 5, 6, 7, 8 , 9.

with little change, logic must correct:

say, if temp 27, discard <50, <40, <30 , when discards <20, figures out 27 in range [20 .. max]. there's no need in these && temp < 50 - have verified temp if more 50 , got negative result 27 (in previous if condition), don't heave again.

if (temp >= 50) { ac = 100% } else if (temp >= 40) { ; // alter nil } else if (temp >= 30) { ac = 50% } else if (temp >= 20) { ; } else if (temp >= 10) { ac = 25%; } else { // temp may -1, take consideration. ac = 0%; }

c if-statement