two inputs and two equations

hey !

is there a way to write a script/funtion/loop that understand i have two inputs (one is set and the second reminds "empty") and two equations with the same output, take the right equation and calculate my output ? eg

i have two possible inputs: Hp and Hkom

equations:

V = 12 + 3.2*Hp

or

V = 12 + 4*Hkom

i want matlab to understand that if i set one input Hp = 12 the second imput Hkom should be neclacted and take the write equation: V = 12 + 3.2*Hp

and calculate my V ??

[darova]

What have you tried? Did you try if..else statement?

Please provide some of your attempts

[Aleksandra Ksiezyk]

no, i did not try because i want to avoid case or if. that is why i wrote here if anyone has some idea to solve it.

[John D'Errico]

As I pointed out, you still really do need to use an if, in some form.

Answer 1

[John D'Errico]

This is easy enough to answer, as long as EXACTLY ONE of the two inputs was provided.

However, you need to consider what happens if BOTH or NEITHER of the values were provided. In those cases, your code would fail. It must fail, because an incomplete definition was given.

What code would I write to solve this? Simplest might be:

if numel([Hp,Hkom]) ~= 1
   error('The sky is falling!')
else
   V = [12 + 3.2*Hp,12 + 4*Hkom];
end

[Aleksandra Ksiezyk]

it does not work at all. :(

it i assign Hp = 6 and Hkom=2 it does not work and when i write only one variables .

Hp= 6;
Hkom=2;

if numel([Hp,Hkom]) ~= 1
   error('The sky is falling!')
else
   V = [12 + 3.2*Hp,12 + 4*Hkom];
end