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Questions

Illustrate, by example, how a C++ struct may be passed as a parameter by value or...

Illustrate, by example, how a C++ struct may be passed as a parameter by value or by reference. Also, show how it can be returned from a function. Be thorough in your example and explain your code.

In: Computer Science

CPP Task: You are to write a class called Monomial, using filenames monomial.h and monomial.cpp, that...

CPP

Task: You are to write a class called Monomial, using filenames monomial.h and monomial.cpp, that will allow creation and handling of univariate monomials, as described below.

Monomial Description

Each monomial object has following properties:

Each monomial has a coefficient and a power.
Monomial power is always positive.
Monomial power is always integer.
Monomials cannot be added if they have different powers

Class Details

The single constructor for the Monomial class should have 2 parameters: an floating point coefficient value (optional, with a default value of 1.0); and an integer power value (optional, with a default value of 1). If the power value is less then 1, set the power to 1. The class will need to provide internal storage for any member data that must be kept track of.
There should be member functions GetCoefficient, and GetPower, which will return the monomial’s coefficient value, and monomial’s power value, respectively. The GetPower method should return integer results. The GetCoefficient function should return its result as a float.
There should be member functions SetPower, which will set the monomial’s power to the arbitrary positive value. If the parameter is not positive then set the power to the default value 1.
There should be member function Add, which adds the one monomial to the other. The parameter of this member function need to be a constant reference to the other monomial object. The monomials can only be added if they have the same power, otherwise error message must be printed. The result of the addition is saved in the caller object.
There should be two member functions Multiply (overrides), which each allow to multiply a monomial to a number and to another monomial. The first member function need to accept floating point parameter that is used to perform multiplication of the real number on the the monomial object. The second member function need to accept a constant reference to the other monomial object. Use monomials to coefficients and powers to perform their multiplication. The result of the multiplication is saved in the caller object.
There should be a member function called Exponent that perform exponentiation (raise to power) of the monomial to the specified power value. You only can raise monomial to the positive power, if the power parameter is not positive print error message. The result of the exponentiation is saved in the caller object.
A sample driver program (called monomial-driver.cpp) is provided. It uses objects of type Monomial and illustrates sample usage of the member functions.
Your class declaration and definition files must work with my main program from the test driver, as-is (do not change my program to make your code work!). You are encouraged to write your own driver routines to further test the functionality of your class, as well. Most questions about the required behavior of the class can be determined by carefully examining my driver program and the sample execution. Keep in mind, this is just a sample. Your class must meet the requirements listed above in the specification - not just satisfy this driver program. (For instance, I haven’t tested every illegal fill character in this driver program - I’ve just shown a sample). Your class will be tested with a larger set of calls than this driver program represents.

General Requirements

No global variables, other than constants!
All member data of your class must be private
You can only use the <iostream> library for output. !!! No other libraries are allowed !!!.
When you write source code, it should be readable and well-documented.
Here are some general notes on style guidelines
Your monomial.h file should contain the class declaration only. The monomial.cpp file should contain the member function definitions.

Test Driver:

//
// driver.cpp -- driver program to demonstrate the behavior of
//               the Monomial class

#include <iostream>
#include "monomial.h"

using namespace std;

int main()
{
    // create some monomial: x, 2x, 12.5xÂ³, -3xâ¶
    Monomial m1, m2( 2.0 ), m3( 12.5, -1 ), m4( -3.0 , 6);
    // display monomial
    cout << "Monomial `m1` has the coefficient " << m1.GetCoefficient()
         << " and power " << m1.GetPower() << ": ";
    m1.Print();
    cout << "Monomial `m2` has the coefficient " << m2.GetCoefficient()
         << " and power " << m2.GetPower() << ": ";
    m2.Print();
    cout << "Monomial `m3` has the coefficient " << m3.GetCoefficient()
         << " and power " << m3.GetPower() << ": ";
    m3.Print();
    cout << "Monomial `m4` has the coefficient " << m4.GetCoefficient()
         << " and power " << m4.GetPower() << ": ";
    m4.Print();

    // Change monomial power
    cout << "Monomial `m3` power wasn't changed: ";
    m3.SetPower(-1);
    m3.Print();
    cout << "Monomial `m3` power was changed: ";
    m3.SetPower(3);
    m3.Print();

    // can add monomials with the same powers
    cout << "Monomial addition" << endl;
    m1.Add(m2);
    cout << "x + 2x = ";
    m1.Print();
    // cannot add monomials with different powers
    cout << "xÂ³ + 12.5xÂ³ = ";
    m2.Add(m3);

    // can multiply monomial to a number
    cout << "Monomial multiplication by a number" << endl;
    m2.Multiply(2.5);
    cout << "2x * 2.5 = ";
    m2.Print();

    // can multiply monomials
    cout << "Monomial multiplication by a monomial" << endl;
    m3.Multiply(m4);
    cout << "12.5xÂ³ * -3xâ¶ = ";
    m3.Print();

    // can raise monomial to the power
    cout << "Monomial exponentiation" << endl;
    m4.Exponent(3);
    cout << "(-3xâ¶)Â³ = "; // -27x^18
    m4.Print();
    cout << "(3x)â° = "; // -27x^18
    m1.Exponent(-10);

    return 0;
}

Test Driver Output

Monomial `m1` has the coefficient 1 and power 1: 1x^1
Monomial `m2` has the coefficient 2 and power 1: 2x^1
Monomial `m3` has the coefficient 12.5 and power 1: 12.5x^1
Monomial `m4` has the coefficient -3 and power 6: -3x^6
Monomial `m3` power wasn't changed: 12.5x^1
Monomial `m3` power was changed: 12.5x^3
Monomial addition
x + 2x = 3x^1
x³ + 12.5x³ = Cannot add monomials with different powers
Monomial multiplication by a number
2x * 2.5 = 5x^1
Monomial multiplication by a monomial
12.5x³ * -3x⁶ = -37.5x^9
Monomial exponentiation
(-3x⁶)³ = -27x^18
(3x)⁰ = Can raise only to a positive power

In: Computer Science

Consider a class ‘A’ with a method public static void show( ). A class ‘Derived’ is...

Consider a class ‘A’ with a method public static void show( ). A class ‘Derived’ is the subclass of ‘A’.
Is it possible to define the same method public static void show( ) in the Derived class. Why give reasons? Is it run time polymorphism? (0.5 Marks)
Is it possible to define the method public void show( ) (non static method) in the Derived class. What will happen and why give reasons?

In: Computer Science

<!DOCTYPE html> <html> <body>   ...

<!DOCTYPE html>
<html>
<body>

   
   
   <title> name </title>
<script>
//
// Write a function that calculates the amount of money a person would earn over
// a period of years if his or her salary is one penny the first day, two pennies
// the second day, and continues to double each day. The program should ask the
// user for the number of years and call the function which will return the total
// money earned in dollars and cents, not pennies. Assume there are 365 days
// in a year.
//

function totalEarned(years) {

/////////////////////////////////////////////////////////////////////////////////
// Insert your code between here and the next comment block. Do not alter //
// any code in any other part of this file. //
/////////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////////
// Insert your code between here and the previous comment block. Do not alter //
// any code in any other part of this file. //
/////////////////////////////////////////////////////////////////////////////////

}

var yearsWorked = parseInt(prompt('How many years will you work for pennies a day? '));
alert('Over a total of ' + yearsWorked + ', you will have earned $' + totalEarned(yearsWorked));

</script>
</body>
</html>

In: Computer Science

On Lab 10 you did Chapter 8’s Programming Exercise 13, using the name Lab10TestScores and assuming...

On Lab 10 you did Chapter 8’s Programming Exercise 13, using the name Lab10TestScores and assuming that the class has ten students and five tests. Now let’s rewrite it to use dynamic arrays so that it will work for any number of students and any number of tests. Call this new program Lab11TestScores. Modify the program so that it asks the user to enter the number of students and the number of tests before it reads the data from the file named Lab11ScoresData.txt. (Two data files, Lab11ScoresData_5_3.txt and Lab11ScoresData_11_6.txt, are provided so you can use to test your program.). Let me know if you have questions. #include #include using namespace std; void readFile(string names[10], int scores[][5]) { ifstream in("Lab10ScoresData.txt"); for (int i = 0; i < 10; i++) { in >> names[i] >> scores[i][0] >> scores[i][1] >> scores[i][2] >> scores[i][3] >> scores[i][4]; } } void average(int scores[][5], float avg[], char grade[]) { int total; for (int i = 0; i < 10; i++) { total = 0; for (int j = 0; j < 5; j++) total += scores[i][j]; avg[i] = (float)total / (float)5; } for (int i = 0; i < 10; i++) { if (avg[i] >= 90) grade[i] = 'A'; if (avg[i] < 90 && avg[i] >= 80) grade[i] = 'B'; if (avg[i] < 80 && avg[i] >= 70) grade[i] = 'C'; if (avg[i] < 70 && avg[i] >= 60) grade[i] = 'D'; if (avg[i] < 60 && avg[i] >= 50) grade[i] = 'E'; if (avg[i] < 50) grade[i] = 'F'; } } void sortByName(string names[], float avg[], char grade[]) { for (int i = 0; i < 9; i++) { for (int j = i + 1; j < 10; j++) { if (names[i] > names[j]) { string n = names[i]; names[i] = names[j]; names[j] = n; float a = avg[i]; avg[i] = avg[j]; avg[j] = a; char g = grade[i]; grade[i] = grade[j]; grade[j] = g; } } } } void output(string names[], float avg[], char grade[]) { cout << "Name\tAverage\tGrade\n"; for (int i = 0; i < 10; i++) { cout << names[i] << "\t" << avg[i] << "\t" << grade[i] << endl; } } void countGrade(char grade[]) { int a = 0, b = 0, c = 0, d = 0, e = 0, f = 0; cout << "\n\nGrade\tCount\n"; for (int i = 0; i < 10; i++) { if (grade[i] == 'A') a++; if (grade[i] == 'B') b++; if (grade[i] == 'C') c++; if (grade[i] == 'D') d++; if (grade[i] == 'E') e++; if (grade[i] == 'F') f++; } cout << "A\t" << a << endl; cout << "B\t" << b << endl; cout << "C\t" << c << endl; cout << "D\t" << d << endl; cout << "E\t" << e << endl; cout << "F\t" << f << endl; } int main() { string names[10]; int scores[10][5]; float avg[10]; char grade[10]; readFile(names, scores); average(scores, avg, grade); sortByName(names, avg, grade); output(names, avg, grade); countGrade(grade); system(" pause "); return 0; }

Lab11ScoresData_11_6.txt.

Johnson 85 83 77 91 76 99
Aniston 80 90 95 93 48 100
Cooper 78 81 11 90 73 54
Gupta 92 83 30 69 87 78
Blair 23 45 96 38 59 82
Clark 60 85 45 39 67 67
Kennedy 77 31 52 74 83 77
Bronson 93 94 89 77 97 80
Sunny 79 85 28 93 82 45
Smith 85 72 49 75 63 92
Groot 90 87 94 75 100 100

Lab11ScoresData_5_3.txt

Johnson 85 83 77
Aniston 80 90 95
Cooper 78 81 11
Gupta 92 83 30
Blair 23 45 96

In: Computer Science

Linked Lists Problem 1 Implement a program that reads the following ages (type int) from text...

Linked Lists

Problem 1
Implement a program that reads the following ages (type int) from text file ages.txt and stores
them in a linked list:
16 18 22 24 15 31 27 19 13
Implement the class LinkedList along with any applicable member functions (e.g. void
insert(int num)).
Perform the following actions on the list (if applicable, use recursion):
1. Display the data in the list
2. Insert 18 at the front of the list
3. Insert 23 at the end of the list
4. Insert 25 after the number 24
5. Compute the average age
6. Sort the ages in ascending order
7. Determine how many people are 18 or older

Problem 2
Implement a program that reads the following data (two strings, one double) from text file
balances.txt and stores it in a linked list:
John Miller 2508.13
Carolyn Spacer 188.54
Mark Lee 1816.82
Sophia Brown 3200.68
Jim Gomez 12068.34
Carlos Mendoza 783.41
Erica Robertson 2000.67
Implement the class LinkedList along with any applicable member functions (e.g. void
moveToEnd(string fullName)).
Perform the following actions on the list:
1. Display the data in the list
2. Remove the person with the lowest balance
3. Display the name and balance of the person with the most money
4. Display the average balance of people with a balance of $2,000 or more
5. Find Sophia Brown and move her to the end of the list (use multipurpose helper
functions to make this easier)

In: Computer Science

Objective in JAVA (Please show output and have the avergae number of checks also.): Implement both...

Objective in JAVA (Please show output and have the avergae number of checks also.):

Implement both linear search and binary search, and see which one performs better given an array 1,000 randomly generated whole numbers (between 0-999), a number picked to search that array at random, and conducting these tests 20 times. Each time the search is conducted the number of checks (IE number of times the loop is ran or the number of times the recursive method is called) needs to be counted and at the end the total number of checks should be averaged.

A few notes

Each algorithm (linear search and binary search) is ran 20 times

Each time a new sorted array of whole numbers is created and populated with random values from 0-999

A value to be searched in the said array is randomly selected from the range 0-999

Each algorithm must display if that number was successfully found

Each algorithm must display the number of checks it took to determine the above answer

It is advisable to create a method that returns the sorted array

Populate the array with random numbers

Search the array next

Return whether or not the value was found in the array

Implement both searches as a method

However instead of returning whether or not it found the number it should return the number of checks.

Whether the value is or is not found can be printed in the method

Binary search is fairly simple to create using recursion

Do not count the out of bounds or stopping index as a check

Example:

Welcome to the search tester. We are going to see which algorithm performs the best out of 20 tests

Searching using linear search

Found!