Question

I need help solving problem 9.16 from matlab for engineers holly moore 4th edition

% 9.16 A store owner asks you to write a program for use in the checkout process.
% The program should:
% • Prompt the user to enter the cost of the first item.
% • Continue to prompt for additional items, until the user enters 0.
% • Display the total.
% • Prompt for the dollar amount the customer submits as payment.
% • Display the change due.

Answer 1

prompt = 'Enter the cost of the item : '; %asking the use to enter the cost of the item
x = input(prompt); % taking the cost of the item as input and assigning it to x
TotalAmount=x;%initializing the total cost with value x
while x != 0 % condition till the items cost is not zero
prompt = 'Enter the cost of the item : '; %asking for the cost of the item
x = input(prompt); %taking the item cost as input fromt the user
TotalAmount=TotalAmount+x; % adding the cost value to the total sum
end
fprintf('Total Amount is $%.2f\n',TotalAmount);%displaying the total amount of all the items
prompt = 'Enter dollar amount customer submitted as payment : '; %asking the user to enter the dollor amount customer submitted for the paymet
camount = input(prompt);%taking the dollar amount customer submitted as input
change = camount - TotalAmount; % calcultaing the change
fprintf('Total change is $%.2f\n',change);%displaying the change value

Input

Output :

Please let me know if anything is required.