Programming & Computer Science Answers

Implement a class Matrix to create matrices of 2x2, 3x3 and 4x4 with the following private

datamembers:

1. int **matrix – a double pointer of type integer to create a 2D array (matrix)

2. int row – an integer to store the rows in the matrix

3. int col – an integer to store the columns in the matrix

The class shall have the following public member functions:

1. Matrix Add(Matrix m) – adds the calling object matrix with the one passed as an argument and returns a resultant matrix

2. Matrix Subtract(Matrix m) – subtracts the calling object matrix with the one passed as an argument and returns a resultant matrix

3. Matrix Multiply(Matrix m) – multiplies the calling object matrix with the one passed as an argument and returns a resultant matrix

4. int FindkSmallest(int k) – a function that finds the kth smallest element in the matrix. If k is 1, return the smallest element. If k is 2 return the second smallest element and so on.

5. Matrix merge(Matrix m) - a function to merge two matrices.

(using dev c++) Create a program that has class definitions for Item, Customer and Sales. The main simply

creates object object of each class and test its member functions. Modify the main program such that it

provides a menu driven interface where user can create objects of Item, Customer and a complete a

sales transaction with the sales object. The program should also have an option for display the records of

items, customers and sales. To make your program more useful, include file handling such that when

objects are created for Items, Customers and Transaction, the user will be prompted to save the record

on the file or not.

USING POLYMORPHISM

-Create a complex program that applies control structure, iterative, array . 

Create a Java program in jdoodle that will determine if the score is Passed/Failed. (10 is the passive score out of 20)

• Will not accept special characters.
• will not accept blank score.
• will not accept if it's greater than 20.
• will not accept if it's lesser than 1.