Project 2 Nested conditional statements

1. Problem Statement:
The goal of this programming assignment is to give students experience creating an
interactive program that uses nested conditional statements.
In particular, your task is to write a program that simulates an online restaurant,
where users can choose between the “breakfast menu” the “lunch menu” or the
“dinner menu” and then choose food items to purchase from one of these menus. To
meet these goals, your program should do the following:
• Print a message asking the user which menu they wish to order from. You
should also include instructions on what to enter to select a menu. For example,
one option is to use integers 1,2,3. Another option is to use single characters
B,L,D. Finally, you could have users type out the words breakfast,lunch,dinner.
It is up to you to choose what the user should type.
• Read the user’s input from above, and use this information to decide what list of
food menu items to print. To keep things short and simple, your three menus
should only include five items each. For each menu item, you should print the
name of the item and the price of the item. You should also print instructions on
what the user must type to select an item. For example, you could use integers
1,2,3,4,5 or single characters, or single words. Again, this is up to you.
• Read the user’s input of the menu item they wish to buy, and ask them how
many orders of that item they want to buy. Read the item quantity from the
user, and calculate and print the total cost for this purchase using the formula
“total_cost = item_price * item_quantity + sales tax”. To keep things simple, lets
pretend the sales tax rate is 5% of the purchase price.
• Finally, prompt the user to confirm their order with a message “Do you wish to
order this food now? (yes/no)”. If the user enters “yes” then print a thank you
for your order message. If they enter “no” print a different message saying sorry
we could not help you.
2. Design:
This project is all about printing messages, reading user inputs, and performing
different operations based on user inputs. Your first design decision is to select the
messages you want to print out to the user to explain the different options available
at each stage of the program. Your next design decision is to decide how to read in the user’s input and use this information to take different branches in the program.
For example, what variables to use to store the user’s input, how to compare these
to the list of expected input values, and what to do if someone types in an
unexpected input. Your final design task is to work out the formula needed to
calculate the total cost of the user’s order.
3. Implementation:
Since you are starting with a "blank piece of paper" to implement this project, it is
very important to develop your code incrementally writing comments, adding code,
compiling, debugging, a little bit at a time. This way, you always have a program that
"does something" even if it is not complete.
As a first step, start with an empty main function, and add the code to print the
initial messages to the user, read the user’s input, and then print the input values
back out again. Once this part is working, you can start printing more messages, and
read more user inputs to select menu items.
4. Testing:
Test your program to check that it operates correctly for all of the requirements
listed above. To do this, you should check every branch through the code (the three
menu choices at the start, and the five item choices for each menu). You should also
verify that your total cost formula works with a range of quantity values.
You are NOT required to add error checking in this program, but it is always good to
test a program to see what happens if the user inputs unexpected data. For
example, what happens to your program if the user enters an invalid menu choice or
a silly quantity? You should cut/paste these results into your project report to
document what your program does in these cases.
5. Documentation:
When you have completed your C++ program, write a short report using the
“Programming Project Report Template” describing what the objectives were, what
you did, and the status of the program. Does it work properly for all test cases? Are
there any known problems?