Using Visual Studio, C# Programming

Lecture: Objects, Inheritance and abstract classes, member init list, shape, circle and cylinder.

Complete Exercises 4 and 5 (100pts)

4. Person and customer classes

Design a class named Person with properties for holding a person's name, address, and telephone number. Next, design a class named Customer, which is derived form the Person class. The Customer class should have a property for a customer number and a Boolean property indicating whether the customer wishes to be on a mailing list, Demonstrate an object of the Customer class in a simple application.

5. PreferredCustomer Class

A retail store has a preferred customer plan where customers can earn discounts on all their purchases. The amount of a customers discount is determined by the amount of the customers cummulative purchases in the store as follows:

- When a preferred customer spends $500, he or she gets a 5 percent discount on all future purchases.

- When a preferred customer spends $1,000, he or she gets a 6 percent discount on all future purchases.

- When a preferred customer spends $1,500, he or she gets a 7 percent discount on all future purchases.

- When a preferred customer spends $2,000, he or she gets a 10 percent discount on all future purchases.

Design a class named PreferredCustomer, which is derived from the Customer class you created in Exercise 4. The PreferredCustomer class should have properties for the amount of the customer's purchases and the customer's discount level. Demonstrate the class in a simple application.

Complete below for 100pts extra credit

• Use overloaded constructors and member initialization list
• Person will be an abstract class with a virtual function called CalcDiscount
• Override the discount method for a normal customer and for a preferred customer
  • A normal customer gets a 0% discount review #5 for a preferred customer
• Create one array of the defined Person object where you instantiate Customers and Preferred Customers in the array
• Implement and test your override of the discount method
• Remember your array must be of the Person type

Person[] people=new Person[2];

people[0]=new Customer(arguments here);

people[1]=new Preferredcustomer(arguments here);

people[0].calcdiscount();

people[1].calcdiscount();

I am working on a currency exchanging vending machine. I got it to work until the currency exchange section but the money won't be put into userAmount for the final section and it just repeat the currency exchange section.

Here is my code:

#include <cctype>
#include <iostream>
#include <cstring>
#include <cstdio>
#include <iomanip>

using namespace std;

double convert(double currency, double conversionRate)
{
   return currency * conversionRate;
}

int menu() {
   char choice;
   int price;
   cout << "Welcome to the snack vending machine" << endl;
   cout << endl;
   cout << "Available snacks to select from:" << endl;
   cout << "\t L - Lays Chips \t $2" << endl;
   cout << "\t S - Snickers \t $5" << endl;
   cout << "\t P - PopTart \t \t $3" << endl;
   cout << "\t C - Cookies \t \t $5" << endl;
   cout << "\t B - Browine \t \t $2" << endl;
   cout << "\t N - Nuts \t \t $5" << endl;
   while (1) {
       cout << "Please enter the letter labeling your snack selection: ";
       cin >> choice;
       choice = toupper(choice);
       if (choice == 'L') {
           price = 2;
           break;
       }
       else if (choice == 'S') {
           price = 5;
           break;
       }
       else if (choice == 'P') {
           price = 3;
           break;
       }
       else if (choice == 'C') {
           price = 5;
           break;
       }
       else if (choice == 'B') {
           price = 2;
           break;
       }
       else if (choice == 'N') {
           price = 5;
           break;
       }
       else
           cout << "Invalid selection!" << endl << endl;
   }
   return price;
}

int acceptMoney(int price) {
   int userAmount = 0;
   int choice;
   double currency1, currency2;
   do
   {
       cout << " CURRENCY CONVERSION" << endl << endl;
       cout << "1. Euros to Dollars" << endl;
       cout << "2. Peso to Dollars" << endl;
       cout << "3. Pounds to Dollars" << endl;
       cout << "4. Exit" << endl << endl;
       cout << "Select your choice: ";
       cin >> choice;
       while (choice < 0 || choice > 4)
       {
           cout << "Enter a valid option: ";
           cin >> choice;
       }
       cout << endl;
       switch (choice)
       {
       case 1: cout << "Enter amount in Euros: ";
           cin >> currency1;
           currency2 = convert(currency1, 1.11);
           cout << "Amount in Dollars: " << currency2;
           userAmount += currency2;
           break;

       case 2: cout << "Enter amount in Peso: ";
           cin >> currency1;
           currency2 = convert(currency1, 0.052);
           cout << "Amount in Dollars: " << currency2;
           userAmount += currency2;
           break;

       case 3: cout << "Enter amount in Pounds: ";
           cin >> currency1;
           currency2 = convert(currency1, 1.31);
           cout << "Amount in Dollars: " << currency2;
           userAmount += currency2;
           break;

       case 4: break;
       }
       cout << endl << endl;
   } while (choice != 4);
   return price;
}

int computeChange(int totalPaid, int totalPrice) {
   return totalPaid - totalPrice;
}

int main()
{
   int totalPrice, totalPaid, change;
   char choice;
   while (1) {
       totalPrice = menu();
       totalPaid = acceptMoney(totalPrice);
       change = computeChange(totalPaid, totalPrice);
       cout << endl;
       cout << "Your total inserted: " << totalPaid << " Dollars" << endl;
       cout << "Dispensing change: " << change << " Dollars" << endl;
       cout << endl;
       cout << "Would you want to make another purchase? (Y/N): ";
       cin >> choice;
       cout << endl;
       choice = toupper(choice);
       if (choice == 'N') {
           cout << "Thank you!!!" << endl;
           break;
       }
       cout << endl;
   }
   return 0;
}

when is it more appropriate to use online storage as compared to offline storage

Prepare a list of five Web sites that job seekers should visit for advice about cover letters and résumés, including online postings. Include a one-paragraph summary of the material found on each site.

def compare_elevations_within_row(elevation_map: List[List[int]], map_row: int, level: int) -> List[int]:
"""Return a new list containing the three counts: the number of
elevations from row number map_row of elevation map elevation_map
that are less than, equal to, and greater than elevation level.

Precondition: elevation_map is a valid elevation map.
0 <= map_row < len(elevation_map).

>>> compare_elevations_within_row(THREE_BY_THREE, 1, 5)
[1, 1, 1]
>>> compare_elevations_within_row(FOUR_BY_FOUR, 1, 2)
[0, 1, 3]

"""
for i in elevation_map[map_row]:
differences=[0,0,0]
if i<level:
differences[0] += 1
elif i==level:
differences[1] += 1
else:
differences[2] += 1
return differences

This was written in python, I am wondering why does the header of the function shows syntax error starting from List. (List[List[int]], map_row: int, level: int) -> List[int]:)these are all underedline

Using the following schema, write a SQL query to satisfy the question: What are the names of the suppliers of 'Pith_helmet' sold in a department managed by 'Andrew'?

Schema:

Sale (saleno, saleqty, itemno, dname)

Supplier (splno, splname)

Item (itemno, itemname, itemtype, itemcolor)

Department (deptname, deptfloor, deptphone, empno)

Delivery (delno, delqty, itemnum, dptname, splno)

Employee (empno, empfname, empsalary, departname, bossno)

Question 2: Create a class Fract fraction with two private integer data members: num (Numerator) and den (denominator). write code for:

Part A) class declaration header file

Part b) constructor that validates input (prevent 0 on the denominator in a fraction simplified fraction that is not reduced, avoids negative denominators) with default arguments 0 and 1.

Part c)Two fractions with prototype Fract add (fract) and Fract multiply (fract) completing the usual addition and multiplication

Part d) Just all fractions by writing a short test driver that creates two fractions with the values 3/6 and ⅔ and prints there sum and product

C++ language

IN C++ PLEASE

Given a Student class, create a class with following characteristics

• The class name should be ClassRoom.
• Private variable students to maintain the list of Student objects.
• Function addStudent with input parameter name (string) and rollNo(int) adds a new student in “students” list.
• Method getAllStudents should return all the students in ClassRoom.

Input
    Jack

1

    Jones

    2

    Marry

    3

    where,

• First & Second line represent a student’s name and roll number. And so on.

Output

    1 - Jack

    2 - Jones

    3 - Marry

Assume that,

• Maximum “students” count can be 10.

Given Code:

#include<iostream>
#include<cstring>
#include <algorithm>
using namespace std;

class Student{
public:
string name;
int rollNo;
};

   //write your code here

int main()
{
string name;
char temp[20];
int rollNo, N, i;
Student * students;
ClassRoom classRoom;
i=0;
while(getline(cin, name) && cin.getline(temp,20)){
rollNo = atoi(temp);
classRoom.addStudent(name, rollNo);
i++;
}
N = i;
students = classRoom.getAllStudents();
for(int i=0 ; i < N; i++){
cout << (students+i)->rollNo << " - " << (students+i)->name;
if(i<N-1)
cout<<endl;
}
return 0;
}

Write a function in Matlab that will compute the approximation for ln(x) given the inputs to the function are x and n. This function requires a running sum using a for-loop. ln (?) = lim?→∞∑ (−1)^(?−1)*(? − 1)^?/k

The purpose of this exercise is to provide the Marketing department with a method to sort a predefined data list by zip code, last name, first name so they can take advantage of bulk mailing rates.   
Assignment: 1. Create a table with the following fields called "Homework1Data" with (4 fields), then run the inserts below into the table (Figure 1-1). 2. Write a single SQL Query that has the following fields (6 fields so they can easily be moved around using a Mail Merge) using these names (alias); Firstname, Lastname, Address, City, State, Zip be sure to sort by zip code, last name, first name 3. Turn in a copy of your SQL Query (single statement - not a procedure)
Hint: The magic exist in the string manipulation functions (LENGTH, INSTR, SUBSTR, etc.)
Figure 1-1:

CREATE TABLE homework1data ( name VARCHAR2(30), address VARCHAR2(30), location VARCHAR2(30), zip VARCHAR2(10)); ----------------------------------------- INSERT INTO Homework1Data (Name, Address, Location, Zip) VALUES ('Ferguson, Shawn M.', '1940 Fountainview Court', 'Reynoldsburg, Ohio', '43068'); INSERT INTO Homework1Data (Name, Address, Location, Zip) VALUES ('Phillips, George', '19 Pleasant St.', 'Columbus, OH', '43231'); INSERT INTO Homework1Data (Name, Address, Location, Zip) VALUES ('Thompson, Mary', '200 E. Main St.', 'Columbus, Oh', '43215'); INSERT INTO Homework1Data (Name, Address, Location, Zip) VALUES ('Swatson, Robert', '584 Yellowstone Dr.', 'Westerville, OH', '43081'); INSERT INTO Homework1Data (Name, Address, Location, Zip) VALUES ('Banks, Heather T.', '19 Pleasant St.', 'Columbus, Ohio', '43231');

• Amazon and Google have implemented cloud-based DBMS, what are some pros and cons?
• What are some of the steps that you can take to assist with cloud DBMS security for an organization?
• Why is data security important now more than ever?
• What are some of the steps that we can take to ensure that our database is protected and secure?
• How can you use user views to enhance security and restrict access?

What is the circuit diagram of password based door lock system project by using interface 8088 microprocessor with peripherals Ics ( PPI , PIT and PIC ) and what is code by using assembly language ?

notes:
1- this question related to microprocessor Interface subject .
2- I need answer after 4 hour very necessary , please