Question

Using the following code:

store.py

from abc import ABC,abstractmethod
class Store(ABC): #creating a abstract class
name='' #declaring attributes in class
address=''
status=''
sales_tax_percentage=0.0

def __init__(self,name,address,status,sales_tax_percentage): #init method to initialize the class attributes
self.name=name
self.address=address
self.status=status
self.sales_tax_percentage=sales_tax_percentage

def get_name(self): #Getter and setter methods for variables
return self.name

def set_name(self,name):
self.name=name

def get_address(self):
return self.address

def set_address(self,address):
self.address=address

def set_status(self,status):
self.status=status

def get_status(self):
return self.status

def set_sales_tax_percentage(self,sales_tax_percentage):
self.sales_tax_percentage=sales_tax_percentage

def get_sales_tax_percentage(self):
return self.sales_tax_percentage

def is_store_open(self): #check store status or availability
if self.status=="open": #Return true if store is open
return True
elif self.status=="closed": #Return false if store is closed
return False

def calculate_total_sales_tax(self): #abstract method
pass

def calculate_total_sales(self): #abstract method
pass

1. Create a file called restaurant.py which contains a class called Restaurant which is type of Store. It should possess all the attributes and functions present in the Store class without having to re-implement those in the Restaurant class. The Restaurant class is made up of the following:
   • Attributes/Properties o Total number of people served
     • Max occupancy o Current occupancy o Price per person
   • Functions/Functionality o Constructor which provides the ability to pass and set the values for the various attributes
     • seat_patrons should do the following:
       • Take the number of people to be seated as input
       • Update the values of the appropriate attributes
       • If number of people to be seated does not exceed or equals the max occupancy
         • Print “Welcome to [replace with name of restaurant]” • Return True
       • If number of people to be seated exceeds the max occupancy
         • Print “We are at capacity, we appreciate your patience”
         • Return False
     • serve_patrons which should do the following:
       • Take the number of people to serve as input
       • Update the values of the appropriate attributes
       • Return the number of people being served currently o checkout_patrons (this is when the patrons are ready to leave the restaurant) which should do the following:
       • Take the number of people leaving as input
       • Update the values of the appropriate attributes
       • Return the current occupancy of the restaurant o Create a getter and setter for the attribute: Price per person

Answer 1

This is Restaurant class which extending the store class defined in the question. As the ques states, without implementing the store class... I just extend it to fetch the name of restaurant.

class Restaurant extends store{
   int total_people_served, max_occupancy, current_occupancy;
   double price_per_person;
  
   public Restaurant(int total_people_served, int max_occupancy, int current_occupancy, double price_per_person){
       this.total_people_served= total_people_served;
       this.max_occupancy= max_occupancy;
       this.current_occupancy= current_occupancy;
       this.price_per_person= price_per_person;
          
   }
  
  
   public int seat_patrons(int numOfPeopleSeated){
         
       int check= this.current_occupancy+numOfPeopleSeated;
       if(check <= this.max_occupancy){
           serve_patrons(numOfPeopleSeated);
           this.total_people_served+=numOfPeopleSeated;
           this.current_occupancy+=numOfPeopleSeated;
           return 1 ;
       }
       else
           return 0;
       }
     
      public void serve_patrons(int num){
         
       System.out.println("number of people being served: "+ num);
         
         
   }
     
      public void checkOut(int checkout_total){
         
       this.current_occupancy-=checkout_total;
       System.out.println("current occupancy: "+ this.current_occupancy);
         
       }
public static void main(String[] args){
      
       int ch, ch_in;
       Scanner sc= new Scanner(System.in);
       store s1= new store();
       s1.setName("KFC");
       Restaurant r1= new Restaurant(100, 15, 10, 500);
       System.out.println("Enter number of people arrive: ");
       ch_in= sc.nextInt();
       int res= r1.seat_patrons(ch_in);
       if(res == 1){
           System.out.println("Welcome to "+ s1.getName());
       }else
           System.out.println("We are at capacity, we appreciate your patience");
       System.out.println("Enter number of people for checkout: ");
       ch= sc.nextInt();
       r1.checkOut(ch);
      
   }
}

The Store class:

public store(){
  
}

public store(String name,String address, int status, double sales_tax_percentage){
  
   this.name= name;
   this.address=address;
   this.status=status;
   this.sales_tax_percentage= sales_tax_percentage;
  
}

public String getName(){
   return this.name;
}
public void setName(String name){
   this.name= name;
}

public String getAddress(){
   return this.address;
}

public void setAddress(String address){
   this.address= address;
}

public int getStatus(){
   return this.status;
}
public void setStatus(int status){
   this.status= status;
}
public double getsales_tax_percentage(){
   return this.sales_tax_percentage;
}

public void settsales_tax_percentage(double sales_tax_percentage){
   this.sales_tax_percentage= sales_tax_percentage;
}
}

Now run the program and outputs are follows:

in here max capacity= 15, So when I gave input 4 as number of people arrived

current occupancy was 10, 10+4 = 14,

14< 15, that's why it prints welcome message.

Then check out people input is given as 3, so,

current occupancy= 14,, 14- 3= 11,

and it shows current occupancy as 11 in output.

On 2nd time running of code:

I gave input as 7,

So, current occupancy= 10, i.e. 10+7= 17,

Max occupancy = 15, Which is smaller then current arrival of people

Thus shows "the patience" message.

Images showing the code implementation on Notepad++