C++ Answers

Write a program that declares two classes. The parent class is called Shape that has two data members num1 and num2 to store two numbers. It also has four members functions.

·        The setarea() function set the area and displays the result.

·        The getarea() function get the area and displays the result.

·        The setdraw() function set the coordinates for draw and displays the result.

·        The getdraw() function get the coordinates for draw and displays the result.

The child class is called Circle that overrides all four functions. Each function in the child class checks the value of data members. It calls the corresponding member function in the parent class if the values are greater than 0. Otherwise it displays error message. All the possible exception is handle through exception handling.

Develop a university payroll application. There are two kinds of internee in the university salaried internee, hourly internee. The system takes as input an array containing internee objects, calculates no.of days spent in the university polymorphically, and generates results.

give me an example of gotoxy for loop program in c++

a program that will determine the area of the following: circle, square, rectangle and triangle.

Sample Program Run

Enter the number of test cases: 1

Enter the size of the array: 5

Enter the number of rotation to perform: 2

Enter the elements of the array: 1 2 3 4 5

Resulting array: 4 5 1 2 3

Sample Program Run:

Enter number of test cases: 3

Enter the size of the array: 5

Enter the elements of the array: 5 1 4 2 3

Number of Inversions: 6

Enter the size of the array: 10

Enter the elements of the array: 2 1 3 4 5 6 7 9 8 10

Number of Inversions: 2

Enter the size of the array: 7

Enter the elements of the array: 4 1 3 5 2 3 8

Number of Inversions: 7

Create a Program

You will create a program that displays amount of a cable bill. The Amount is based on the type of customer, as shown in the figure. For a residential customer, the user will need to enter the number of premium channels only. For a business customer, the user will need to enter the number of connections and the number of premium channels. Also enter appropraite comments and any additional instructions in your c++ program. Test the program appropriately before submission. 

You are living off-campus and drive your car to ODU campus everyday of a week. You wonder how many mileages you travel in a week (just to campus and back home) and how much you need to pay for the gas. You log your travel mileage every day during a week (just to campus and back home). This information has been saved in an input file called “mileage.txt”.

Design an algorithm and write a C++ program to do the following:

• Output the mileage for each day.
• Prompt user to enter the price for one-gallon gas.
• Calculate and output the total cost of your travel in the week. Your car's Miles per Gallon (MPG) is 35.
• Save the output in a file named “cost.txt”.

1. Trace and comment each and every line of the C++ program below:

#include <iostream>

using namespace std;

int binarySearch(int arr[], int left, int right, int num)

{

if (right >= left) {

int mid = left + (right - left) / 2;

if (arr[mid] == num)

return mid;

if (arr[mid] > num)

return binarySearch(arr, left, mid - 1, num);

return binarySearch(arr, mid + 1, right, num);

}

return -1;

}

int main(void)

{

int arr[] = { 2, 3, 4, 8, 10, 40 };

int check = 40;

int n = sizeof(arr) / sizeof(arr[0]);

int result = binarySearch(arr, 0, n - 1, check);

(result == -1)

? cout << "Element is not present in array"

: cout << "Element is present at index " << result;

return 0;

}