How do I assign names to values in a matrix

Im supposed to make a function that names fruit based on the voltages using a while loop. The function is supposed to take the voltages and assign them to a variable based off of a set range of voltages for the variable. This is the voltage matrix we are given volt = [18 33 31 34 15 37 10.5 48 50 38 35 39 42 33 31 1 5 9 13 11 27 35 -1 46 22 6 19 36] and we are supposed to sort them as follows; 0 and 10 volts=A , 11 and 20=P, 21 and 30=G, 31 and 40=O, and < 0 or > 40=U

This is my function bellow. I don't really know what I'm doing since I'm not really afluent in coding and my professor is pretty garbage so any help would be nice. Thank you

function [f] = While_Loop(volt)
fruit=volt;

while true
   if volt <=10 & volt>=0
    fruit=A;
elseif volt>=11 & volt<=20
    fruit=P;
elseif volt>=21 & volt<=30
    fruit=G;
elseif volt>=31 & volt<=40
    fruit=O;
elseif volt<=0 & volt>=40
    fruit=U;
   end
   break;
end
fruit=[];
f=fruit;
end

[Walter Roberson]

What is the termination condition for the while loop? For example are you expected to terminate when you reach -1 ? Or is the while loop just being arbitrarily required to teach you about while loops to substitute for more natural for loops?

[Robert Munoz]

The loop is supposed to go until the last voltage is assigned one of the letter values

[Walter Roberson]

So a "make-work" while loop then, leading to worse code than a for loop. Oh well.

Answer 1

[Walter Roberson]

Hint:

initialize output to empty

while the input is not empty

remove the first value from the input and record it, chopping it out of the input vector

take the recorded input and use if statements to classify it

append the result of the classification to the end of the output matrix

end of while loop

At the end of this, your input will be empty and your output will have one entry for each input value.