Project developed for the Programming 2 course at the University of Catania (UNICT).
The 'Orders.txt' file contains information about orders placed in a pizzeria in the following format:
LAST_NAME_CUSTOMER, PIZZA,QUANTITY, UNIT_PRICE
The fields LAST_NAME_CUSTOMER and PIZZA are of textual type, the QUANTITY field is an integer, and the UNIT_PRICE is a decimal number. It is assumed that there are no repetitions in last names.
The candidate is required to write a C++ program that, using appropriate data structures, can:
Load the information from the file.
Group the orders by customer.
Find all orders for a given customer, print them on the screen, and calculate the total spent.
Remove customers from orders who have spent less than the average. (BONUS: Save them to a file.)
BONUS: Compile a ranking of the most sold pizzas.
Provide a main function that successfully executes the required methods outlined above.
Additionally, include a concise PDF document explaining the design choices, justifying decisions related to data structures and algorithms.
NB: The project will be compiled and executed using the g++ command. Sophisticated implementations or compilations managed by external IDEs will require the student to demonstrate equivalent proficiency in using g++.
The use of the List data structure is essential due to the need for a dynamic data structure to allocate objects from the 'Orders.txt' file. The necessity to compare multiple elements suggests the overload of comparison operators.
< iostream > : Library for using objects like cout, cin, etc.
< fstream > : For reading the txt file and writing the "Deleted Customers" file.
< string > : Library for using string variables.
< sstream > : Library for string streams.
Cliente.h ListaDL.h
Cliente.cpp ListaDL.cpp main.cpp
The choice of creating ListaDL.cpp and Cliente.cpp files was arbitrary and to maintain a specific order in writing. The alternative was to declare and implement the class directly within the header.
Cliente.h and Cliente.cpp ListaDL.h and ListaDL.cpp
In the Cliente.h class, I initialized the entire client class by passing the parameters of the orders (Last Name, Pizza, Quantity, Price) and declared the class methods. In Cliente.cpp, I implemented the methods contained in the header file.
In the ListaDL.h class, I initialized a doubly linked list with all its methods (insertion, search, removal). In ListaDL.cpp, I implemented the methods contained in the header file.