Question

C++ ONLY

This is your first ever program using object oriented methodology. In this assignment you will need to instantiate (create) object(s) and invoke their member functions to perform different tasks. The program is to keep track of customer orders and to create reports as needed.

At minimum you will need several objects to be instantiated throughout the program such as:

• An OrderProcessor object
• Order objects (stored in an array)

Let’s get to class design now.

Class Design

class Order: represents customer order information

• Private member data:
  • customer name
  • product name
  • unit price
  • quantity
  • order date (03/xx/2018)    xx is 2-digit date

• Public constructors: (must use member initializer syntax as shown on etudes modules)
  • Default constructor: set price to 0.0, quantity to 0, date to 03/01/2018
  • Non-default constructor taking customer name, product name, price, quantity, and date as parameters
• Public destructor: output “Order <customer> <product> dtor called …”
• Public member functions: (must declare const function if they do not modify member data)
  • Accessor/mutator for all member data

class OrderProcessor: maintain a list of Order objects (array of Order objects)

• Private member data:
  • Company name
  • Company web site (www.xyz.com (Links to an external site.)Links to an external site. for example)
  • An array of 32 Order objects (namely order_list)
  • Order count (the actual number of Orders in the system)
• Public constructors: (must use member initializer syntax as shown on etudes modules)
  • Default constructor: set order count to 0
  • Non-default constructor: take a string for company name and a string for company web site (must set order count to 0 similar to default constructor)
• Public destructor: output “OrderProcessor dtor called …\n”
• Public member functions: (must declare const function if they do not modify member data)
  • Accessor/mutator for company name, company web site, and order count
  • Init: Use a for loop similar to the LoadVehicle function in assignment 3 to randomly generate 16 Orders (array half full) as follows:
    • Randomly generate a number 1-5: for each number you can assign a Product name (such as iPhone 7, Samsung 52-inch SmartTV, Dell Inspiron 15-inch Laptop, …) and its associated price per unit (you can make up the unit price value however appropriate)
    • Randomly generate a Product quantity for the order (1-10)
    • Randomly generate an order day (1-30 for the month of November)
    • Now call the mutators in Order object to properly initialize the current Order element in the Order array: customer name (declaring a string array of 16 names inside the Init function), Product name, unit price, quantity, order date (of November, 2016). An example of this setting is: order_list[i].set_product (“iPhone 7”);
    • NOTE: don’t forget to update the order count member to 16
  • AddOrder: ask user input for a new Order with all needed Order info and add it to the end of the array
  • ReportOrderDetails: list all orders with a nice format as follows

Company:                                                            Web-site:

                Customer      Product    Quantity       Unit Price      Total cost       Order date               

Implementation/Coding Requirements

• Must follow Google style for naming convention in class declarations and definitions (member data variables, member function names etc …)
• Must define constructors/destructor/member functions separately from class declarations
• Must follow our lecture on the program structure for classes in single file compilation

Main Program

• Instantiate a non-default OrderProcessor object
• Invoke Init member function for the object
• Invoke ReportOrderDetails
• Use a loop to add three more Orders to the OrderProcessor
• Invoke ReportOrderDetails

Answer 1

Here is your C++ Code :D

================================================================================

#include <iostream>
#include <string.h>
#include <stdlib.h>
using namespace std;

class Order
{
string customer;
string product;
float price;
int quantity;
int date;
public:
Order()
{
price = 0.0;
quantity = 0;
date = 1;
}
Order(string name, string prod, float p, int q, int d)
{
customer = name;
product = prod;
price = p;
quantity = q;
date = d;
}
  
string get_customer()
{
return customer;
}
  
void set_customer(string name)
{
customer = name;
}
  
string get_product()
{
return product;
}
  
void set_product(string name)
{
product = name;
}
  
float get_price()
{
return price;
}
  
void set_price(float p)
{
price = p;
}
  
int get_quantity()
{
return quantity;
}
  
void set_quantity(int q)
{
quantity = q;
}
  
int get_date()
{
return date;
}
  
void set_date(int d)
{
date = d;
}
friend class OrderProcessor;
};

class OrderProcessor
{
string company;
string website;
Order obj[32];
int count;
public:
OrderProcessor()
{
count = 0;
}
  
OrderProcessor(string comp, string web)
{
company = comp;
website = web;
count = 0;
}
  
string get_company()
{
return company;
}
  
void set_company(string comp)
{
company = comp;
}
  
string get_website()
{
return website;
}
  
void set_website(string web)
{
website = web;
}
  
void AddOrder()
{
string temp;
cout<<"\nEnter Name of Customer:";
cin>>temp;
obj[count].set_customer(temp);
cout<<"\nEnter Name of Product:";
cin>>temp;
obj[count].set_product(temp);
float cost;
cout<<"\nEnter Cost:";
cin>>cost;
obj[count].set_price(cost);
int t;
cout<<"\nEnter Quantity:";
cin>>t;
obj[count].set_quantity(t);
cout<<"\nEnter Date:";
cin>>t;
obj[count].set_date(t);
count++;
cout<<"\n\nDetails Successfully Added!";
}
  
void init()
{
string products[6] = {"\0", "Samsung TV", "Apple iPhone 7", "Redmi Note 6", "Playstation 4", "HP Laptop"};
string names[6] = {"\0", "Tom", "Susan", "Tony", "Sheldon", "Joey"};
float prices[6] = {0, 40000, 70000, 14000, 40000, 25000};
count = 16;
for(int i = 0; i < 16; i++)
{
int num = rand() % 5 + 1;
obj[i].set_customer(names[num]);
num = rand() % 5 + 1;
obj[i].set_product(products[num]);
obj[i].set_price(prices[num]);
num = rand() % 10 + 1;
obj[i].set_quantity(num);
num = rand() % 30 + 1;
obj[i].set_date(num);
}
}
  
void ReportOrderDetails()
{
cout<<"\n\nCompany: "<<company<<"\t\t\tWebsite: "<<website;
cout<<"\n\n\tCustomer\tProduct\t\t\tQuantity\tUnit Price\tTotalCost\tOrder Date";
for(int i = 0; i < count; i++)
{
cout<<"\n\t"<<obj[i].get_customer()<<"\t\t"<<obj[i].get_product()<<"\t\t"<<obj[i].get_quantity()<<"\t\t"<<obj[i].get_price()<<"\t\t"<<(obj[i].get_quantity() * obj[i].get_price())<<"\t\t03/"<<obj[i].get_date()<<"/2018";
}
}
};

int main()
{
OrderProcessor object("Fortune", "www.fortune.com");
object.init();
object.ReportOrderDetails();
for(int i = 0; i < 3; i++)
{
cout<<"\n\nADDING "<<(i+1)<<" / 3";
object.AddOrder();
}
object.ReportOrderDetails();
return 0;
}

=====================================================================================

If you have any queries, do drop a comment. Thank You :D