Using classes and arrays, the team will develop a set of functions for an online shopping system. The system is represented by the following structure: 1- Class Item having the following private attributes: (ID, name, quantity, price) and the following public methods: - Constructors (default, parameterized, and copy) - Setters & Getters - Operator overloading for the ==, +=,-=, >> and << operators Note that the ID member variable is not entered or read from the user. It is automatically set by the class as a serial ID starting with the first item of ID 1 and incrementing with every new object. 2- Class Seller having the following private attributes: (name, email, items,maxItems), where items is a dynamic array of objects of type Item with the size maxItems. The class has the following public methods: - Constructor (parameterized) - Operator overloading for the insertion << operators - Add An Item. - This will take an Item object as a parameter: - If the item already exists in the seller's items you will increase the item’s quantity by the quantity of the parameter item using the (+=) in Item class, and the price of the parameter object will be ignored. Use the == operator for this where an item is equal to another if they have the same name. - Else you will add it to the seller’s items. - The member function should return a boolean that indicates the successful addition of item, which will succeed if there is a place in the array and fail otherwise. - Sell An Item. - This will take an item name and a quantity as parameters - If the quantity is <= item’s quantity you will decrease it from item Using the (-=) in Item class. - Else you will print him “There is only {quantity} left for this item”. - The member function should return a boolean which is true if the item was found, false otherwise. - Print Items. - This will print all the item information for the seller. - You will print each item using the (<<) operator. Find an Item by ID - This returns an Item object (or a pointer to Item) with the specified ID if there is an item with such ID. - Destructor 3- In the main function, ● First you’ll ask the seller to input his details. ● Then you’ll ask him for his store capacity (maxNumberOfItems). ● Then you will show him a menu to choose from which have the following options: 1. Print My Info. a. This will print the seller info using the (<<) operator in Seller class. 2. Add An Item. 3. Sell An Item. 4. Print Items. 5. Find an Item by ID 6. Exit
OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
Using classes and arrays, the team will develop a set of functions for an online shopping system. The system is represented by the following structure:
1- Class Item having the following private attributes: (ID, name, quantity, price) and the following public methods:
- Constructors (default, parameterized, and copy)
- Setters & Getters
- Operator overloading for the ==, +=,-=, >> and << operators
Note that the ID member variable is not entered or read from the user. It is automatically set by the class as a serial ID starting with the first item of ID 1 and incrementing with every new object.
2- Class Seller having the following private attributes: (name, email, items,maxItems), where items is a dynamic array of objects of type Item with the size maxItems. The class has the following public methods:
- Constructor (parameterized)
- Operator overloading for the insertion << operators
- Add An Item.
- This will take an Item object as a parameter:
- If the item already exists in the seller's items you will increase the item’s quantity by the quantity of the parameter item using the (+=) in Item class, and the price of the parameter object will be ignored. Use the == operator for this where an item is equal to another if they have the same name.
- Else you will add it to the seller’s items.
- The member function should return a boolean that indicates the successful addition of item, which will succeed if there is a place in the array and fail otherwise.
- Sell An Item.
- This will take an item name and a quantity as parameters
- If the quantity is <= item’s quantity you will decrease it from item Using the (-=) in Item class.
- Else you will print him “There is only {quantity} left for this item”.
- The member function should return a boolean which is true if the item was found, false otherwise.
- Print Items.
- This will print all the item information for the seller.
- You will print each item using the (<<) operator.
Find an Item by ID
- This returns an Item object (or a pointer to Item) with the specified ID if there is an item with such ID.
- Destructor
3- In the main function,
● First you’ll ask the seller to input his details.
● Then you’ll ask him for his store capacity (maxNumberOfItems).
● Then you will show him a menu to choose from which have the following options:
1. Print My Info.
a. This will print the seller info using the (<<) operator in Seller class.
2. Add An Item.
3. Sell An Item.
4. Print Items.
5. Find an Item by ID
6. Exit
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