Getting a script to continue to ask for a user specified input value until a certain input is entered.

Hello, I first just want to say how helpful this site is. Anyway, I am trying to create a script where as soon as the script is run, it automatically goes back to the start and asks a user for a new input, and will terminate when the user enters 0 as the input value. Script is shown below for reference:

 clear;clc;
x = input('Enter kilowatt-hour used, (Enter 0 to terminate): ');

   if x <= 300

     cost = 0.09*x;

   elseif x <= 600

     cost = 300*0.09 + 0.08*(x-300);

   elseif x <= 1000

    cost = 300*0.09 + 0.08*300 + 0.06*(x-600);

   else

     cost = 300*0.09 + 0.08*300 + 0.06*400 + 0.05*(x- 1000);

   end

   disp(['The total cost is ', num2str(cost), ' dollars'])

I have all the calculations done, I just need a bit of guidance for getting it to continually ask for an x=input (shown on second line) when the script file is run , and finally terminate when the user enters 0 when prompted for an input. Is there a relatively simple way of doing this?

Any help at all is greatly appreciated, Thanks.

Answer 1

[Geoff]

Here you go =)

while 1
  x = input('etc etc');
  if x == 0
    break;
  elseif x <= 300
    % .
    % .
    % .
  end
end

[Ben]

Thanks! Works perfectly.