Programming & Computer Science Answers

Read about doing multiplication using Karatsuba method

(https://en.wikipedia.org/wiki/Karatsuba_algorithm ).

Write a C++ program which:

• Prompts user to enter two large integer numbers (x, y).

• Make a function called Karatsuba() which takes these two integers and returns the

multiplication result using Karatsuba algorithm.

o Your function should do parameter validation. Both numbers must be more

than 4 digits and less than 10 digits (don’t use strings). If parameters are not

valid then the function should return 0;

o The entered numbers could be negative or positive. For example: 820778 and

-58712979 where x is 6-digit positive number and y is 8-digit negative

number.

• You might need to make another helper function called getDigits() which will get an

integer as input and returns number of digits of that integer. getDigits() will help you

find the value of m and Bm.

• Finally, display result in the main function

Create a class: Person with member variables: name and age. Create two overloaded

constructors for this class along with a copy constructor. Also create a destructor. Include

member function, get_data(), to get the name and age of the person. Define a member function,

display_data() to display the member variables. Define objects for this class and showcase the

Create a class named 'Rectangle' with two data members 'length' and 'breadth' and two methods to print the area. Then create a class named ‘Square’ with data member radius and method to print the area. Print the area of a rectangle and a square with Uses A relationship by creating another class Shape_of_rectangle.

4. Survival of the Biggest

by CodeChum Admin

Looping a number and taking away each digit of it is so much fun, but I wanted to try out a much more complex task: getting the largest digit among them all.

Think you can handle the job?

Instructions:

1. Input a non-zero positive integer.
2. Using the same concept as the previous problem, figure out how to separate the digits of a number and determine which of the digits is the largest one, using a while. Afterwards, print the largest digit.
3. Tip #1: Create another variable that will hold the largest digit. Initial its value to a negative integer, like -1, outside the loop.
4. Tip #2: Everytime you get the rightmost digit, check if it is greater than the current largest digit. If it is, set it as the new largest digit.

Input

A line containing an integer.

214

Output

A line containing an integer.

4

Place Values

by CodeChum Admin

Manipulating values from a series of numbers is fun, but let's try exploring the use of loops a little more.

How about printing out each digit of a number starting from its rightmost digit, going to its leftmost digit?

Instructions:

1. Input a non-zero positive integer.
2. Using while loop, print out each digit of the inputted integer in separate lines, starting from its rightmost digit until the leftmost digit of the number.
3. Tip #1: Use % 10 to get the rightmost digit. For example, if you do 412 % 10, then the result would be the rightmost digit, which is 2.
4. Tip #2: On the other hand, use / 10 to remove the rightmost digit. For example, if you do 412 / 10, then the result would be 41.
5. Tip #3: You'd have to repeat Tip #1 and Tip #2 inside the while() loop for this problem while the inputted integer is not yet 0.

Input

A line containing an integer.

214

Output

Multiple lines containing an integer.

4
1
2

list 20 types of motherboard ,draw and label one?

Write a program that will determine the best Second year student.

Create a front-end class SecondYears that will determine the best first year student.

The class has the following data members:

-an array of ten student objects named myStudents.

The class has the following methods

-enterStudentValues that prompts and reads the values that the each student has to be set to, and sets it accordingly.

-sortStudents that will sort the Students object in descending sequence of the overall average.

-Display that will display all the students in the array.

when you run it must show these: 

Write a main() program that:

-Instantiates a SecondYears object

-Read in values into the SecondYears object students array using its enterStudentValues method.

-Display all the students using the objects display method.

-Sort the students in descending sequence of their overall average.

-Display again to show the best student.

Writing a program that will determine the best Second year student.

Write the class definition for a Student class that contains four private data members: 

-An int studNum to store the student number.

-A string studFirstName to store the student’s first name.

-A string studSurname to store the student’s surname.

-A one dimensional array subjectCode of type string that hold the five subjects that the student is registered for.

-A parallel array to the subject code array called finalMark that holds the final mark that the student obtained for the subject stored in the subject code array.

-A double overallAverage that will hold the overall average that the student has obtained

The class has the following methods:

-A default constructor that sets the data members to appropriate default values for all data members, including the arrays.

-A setStudent method that receives parameters for the student number and name, as well as an array of type string and an array of type double for the subjects code and final mark respectively.