Question

c++

LINEAR SEARCH ARRAYS OF OBJECTS

Use the Item class defined in question #12.

1. (3 pts) Declare an array of 1024 Item objects. Assuming the array is now sorted by Value (price per item * quantity).

2. Write a function (with both declaration/prototype (3 pts) and definition (6 pts) ) that takes an array of Item objects, an integer as array size and two references to integers that represents the start_index and end_index of Item object elements whose Values are 50.0.

The function's implementation should be:

• initialize both start_index and end_index parameters to -1.
• perform a linear search to identify the range of all elements whose Values are 50.0. Note: since the array is sorted your searching must stop as soon as some Item exceeds 50.0.
• If there is only one item is found both start_index and end_index must be the same. Otherwise set start_index and end_index to indicate the range of elements

An example of such array of Items will be the below:

index                   0               1               2             3           4              5           6           7               8              9          ........

Value         21.4      23.3       50.0      50.0      50.0       67.5      88.0       88.3      95.2      141.5    ....... (Note that the array is sorted)

In this example your function must assign 2 to start_index and 4 to end_index.

#12

This question has two parts:

Part 1: Define an Item class with the following specifications:

NOTE: you must declare and define the class separately. Include the definitions of constructors/destructor and member functions in class declaration will result in 50% point deduction.

• Constructors: (MUST USE member initializer syntax) (2 pts)
  • default constructor (set description to "Unknown", quantity to 0, value to 0.0)
  • non-default constructor (3 parameters with the same names as member data' names)
• Destructor: output <description> <quantity> and <price per item>   (1 pts)
• Member data (2 pts): description, quantity (how many), price per item. Do not initialize member data at declaration - it must be done in constructors)
• static data (1 pts) : company name (initialized to "Foothill Merchandise")). Must be constant string and not accessible from outside of the class.
• public static function (1 pts): to return company name
• public member functions (3 pts):
  • accessors/mutators: to save your exam time only provide accessor/mutator for "price per item" member
  • Increment: take a positive integer as its only parameter and add it to quantity. If the parameter is negative simply return.
  • Value: return total value of the item (quantity * price per item)

NOTE: The class definition must follow Google naming convention for class name, member data names and member function names (do not use camelCase convention)

Part 2: (5 pts)

Instantiate two Item objects: one using the default constructor and the other using the non-default constructor (description: "Toys", quantity: 100, price per item: 29.95).

Invoke the company name (static data).

Set the price per item of the default object to the non-default object's price per item.

Output the Value of the non-default object.

Increment the default-object's quantity to 9999.

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
=================================

#include <iostream>
using namespace std;
// Creating an Item class
class Item
{
private:
// Declaring variables
string description;
int quantity;
double value;
static const string companyname;
public:
// Zero argumented constructor
Item()
{
   this->description="Unknown";
this->quantity = 0;
this->value=0.0;
}
Item(string des,int qty,double val)
{
   this->description=des;
this->quantity = qty;
this->value=val;
}
~Item()
{
   cout<<"Description :"<<description<<endl;
   cout<<"Quantity :"<<quantity<<endl;
   cout<<"Value :"<<value<<endl;
   }
   string getDescription()
   {
       return description;
   }
   void setQuantity(int qty)
   {
       this->quantity=qty;
   }
   int getQuantity()
   {
       return quantity;
   }

// mutator function to set the description
void setDescription(string des)
{
this->description = des;
}
void setValue(double val)
{
   this->value=val;
   }
// This function will increment quantity by 1
double increment(int qty)
{
   if(qty>0)
this->quantity +=qty;
else
return quantity*value;
}
double getValue()
{
   return value;
   }
static string getCompanyName()
{
   return companyname;
   }
};

const string Item::companyname="Foothill Merchandise";

int main()
{
   //Creating Two instances of class
Item item1;
   Item item2("Toys",100,29.95);
   cout<<"Company name :"<<Item::getCompanyName()<<endl;
   item1.setValue(45.00);
   cout<<"Item#1 Price per Item :$"<<item1.getValue()<<endl;
   item1.increment(9999);
  
  
  
return 0;
}

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

Output:

=====================Could you plz rate me well.Thank You