Question

Code in C++

Must show: unit testing

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UsedFurnitureItem

1. Create a class named UsedFurnitureItem to represent a used furniture item that the store sells.
2. Private data members of a UsedFurnitureItem are:
   1. age (double) // age in years – default value for
   2. brandNewPrice (double) // the original price of the item when it was brand new
   3. description (string) // a string description of the item
   4. condition (char) // condition of the item could be A, B, or C.
   5. size (double) // the size of the item in cubic inches.
   6. weight (double) // the weight of the item in pounds.
3. Private member functions of a UsedFurnitureItem object are
   1. double CalculateCurrentPrice( ): Current price depends on age, brandNewPrice, and condition of the used furniture Item. If the item is in A-condition, the current price will go down by extra 10% of the brandNewPrice for each year of its age until 7 years (e.g., After the first year, and item with a $100 brandNewPrice will cost $90, after 2 years, $ 80, and so on). If the age is greater than 7 years, the price is fixed at 30% of the brandNewPrice. The current price of B-condition items goes down by extra 15 % of the brandNewPrice for each year until the 5^th year. After that, the current price is fixed at 20% of the brandNewPrice. Items with C-condition are priced at 10% of the brandNewPrice regardless of age.
4. 2. double CalculateShippingCost( ): Shipping cost of a UsedFurnitureItem depends on weight, size, and distance. While weight and size are member variables, shipping distance is provided as an additional argument to this function. Shipping rate is 1 cent per mile for items that are smaller than 1000 cubic inches and smaller than 20 pounds. Items with larger size or weight cost 2 cents per mile.
5. Public member functions of a UsedFurnitureItem
   1. Constructors – default and overloaded [default values: age = 1.0, brandNewPrice = 10.00, description = “Not available”, condition = ‘A’, size = 1.0, weight = 1.0]
   2. Accessors (getters)
6. 1. Mutators (setters) – You should ensure that invalid (zero or negative) values do not get assigned to age, brandNewPrice, size or weight data members. An invalid character (other than ‘A’, ‘B’ or ‘C’) should not be allowed to be assigned

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Test Program:

The test program will test each setter (for objects of both types in a sequence) by calling the setter to set a value and then call the corresponding getter to print out the set value. This test should be done twice on data members that could be set to invalid values (that have numerical or character data type) – once after trying to set invalid values and subsequently, once after setting them to valid values. The data members with string data types (model, description) can be tested just once.

Answer 1

SOLUTION-

I have solve the problem in C++ code with comments and screenshot for easy understanding :)

CODE-

UsedFurnitureItem.hpp

#ifndef USED_FURNITURE_ITEM_H
#define USED_FURNITURE_ITEM_H
#include<string>
using namespace std;
//class declaration
class UsedFurnitureItem
{
private: //private members
double age;
double brandNewPrice;
string description;
char condition;
double size;
double weight;
double calculateCurrentPrice();
double calculateShippingCost(double);
public: //public members
UsedFurnitureItem(double,double,string,char,double,double);
void printInvoice(double);
};

#endif

UsedFurnitureItem.cpp

#include <iostream>
#include "UsedFurnitureItem.hpp"
using namespace std;
//constructor
UsedFurnitureItem::UsedFurnitureItem(double ag,double price,string desc,char cond,double sz,double wt )
{
age=ag;
description=desc;
brandNewPrice=price;
condition=cond;
size=sz;
weight=wt;
}

//function to calcul;ate price
double UsedFurnitureItem::calculateCurrentPrice()
{
double price=0;
if(condition=='A' ||condition=='a') //if condition is A
{
if(age<=7) //if age is less than 7
{
double percent=age*10.0; //percentage depreciation
price=((100-percent)/100)*brandNewPrice; //final price
}
else //if age is more than 7
price=0.3*brandNewPrice; //30% of new price
}

else if(condition=='B' ||condition=='b') //if condition is B
{
if(age<=5) //if age is less than 5
{
int percent=age*15.0; //percentage depreciation
price=((100-percent)/100)*brandNewPrice; //final price
}
else //if age is more than 5
price=0.2*brandNewPrice; //20% of new price
}
else //if condition is C
{
price=0.1*brandNewPrice; //price is 10% of new price
}

return price; //return price
}
//function to calculate shipping cost
double UsedFurnitureItem::calculateShippingCost(double miles)
{
double cost;
if(weight<=20 && size <=1000)
cost=miles; //1 cent per mil
else
cost=2*miles; //2 cents per mile

return cost/100; //returning in dollars
}
//function to print invoice
void UsedFurnitureItem::printInvoice(double miles)
{
cout<<"Age: "<<age<<endl;
cout<<"Brand New Price: $"<<brandNewPrice<<endl;
cout<<"Description: "<<description<<endl;
cout<<"Condition: "<<condition<<endl;
cout<<"Size: "<<size<<endl;
cout<<"Weight: "<<weight<<endl;
cout<<"Calculated current price: $"<<calculateCurrentPrice()<<endl; //calling function fro price calculator
cout<<"Calculated shipping cost: $"<<calculateShippingCost(miles)<<endl; //calling function to calculate shipment cost
cout<<endl;
}

main.cpp

#include <iostream>
#include "UsedFurnitureItem.hpp"

using namespace std;
//main
int main()
{
//variables for different inputs
double age;
double brandNewPrice;
string description;
char condition;
double size;
double weight;
double miles;
//prompt for different inputs and reading those input
cout << "Enter the age of Item: ";
cin>>age; //enter age
cout << "Enter the Brand New Price of Item: ";
cin>>brandNewPrice;
cout << "Enter the condition of Item(A,B,C): ";
cin>>condition;
cout << "Enter the Description of Item: ";
cin.ignore(); //clearing the buffer of cin
getline(cin,description);
cout << "Enter the Size of Item: ";
cin>>size; //enter size
cout << "Enter the Weight of Item: ";
cin>>weight;
cout << "Enter the Shipping miles: ";
cin>>miles; //enter miles for shipping
//creating object of UsedFurnitureItem with parameters
UsedFurnitureItem item(age,brandNewPrice,description,condition,size,weight);
item.printInvoice(miles); //printing invoice for item
return 0;
}

SCREENSHOT -

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