Matlab cash register problem Syntax

Using  either  codes  from  Parts  A  or  B,  adjust  the  m-­‐‑file  in  a  way  such  that  it  will  calculate  the  cost  of   the  scanned  item,  store  it,  and  provide  a  running  total  of  the  bill  as  each  item  in  scanned.   The Code I have (Which works):

disp('What is the price of the item?');
x = input('');
clc;
disp('What type of item is it?');
disp('1. for Luxury Items');
disp('2. for Food or Medical Items');
disp('3. for All Other Items');
y = input('');
switch y
    case 1
        z=(x)+(x*0.11);
    case 2
        z=x;
    otherwise 
        z=(x)+(x*0.07);
end
clc;
disp('The Total Cost of the Item (Dollars):');
disp(z);

What I'm confused about it how to loop the function so that it saves the previous amount (with tax added) and then once I prompt that I don't have any more items it will display the total. This is what I've been playing with but I'm a little lost at this point.

disp('Do you have more items?');
disp('1. for Yes');
disp('2. for No');
q = input('');
clc;
while q==1
    disp('What is the price of the item?');
    x = input('');
    disp('What type of item is it?');
    disp('1. for Luxury Items');
    disp('2. for Food or Medical Items');
    disp('3. for All Other Items');
    y = input('');
    if y==1
        z=(x)+(x*0.11);
    elseif y==2
        z=x;
    else 
        z=(x)+(x*0.07);
    end
if q==2
    end
end
clc;
disp('The Total Cost of the Item (Dollars):');
disp(z+d);

But the problem is that this funtions keeps looping, I want it to prompt me "Do you have any more items after every item I add. Anything help, I'm totally lost in this loop. Thanks!

Answer 1

[Walter Roberson]

while true
  disp('Do you have more items?');
  disp('1. for Yes');
  disp('2. for No');
  q = input('');
  if q == 2
     break
  end
  .....
end