Question 3 Declare a large array of doubles. The first five elements of the array are to be read from the keyboard, and the rest of the array elements are to be read from a file containing an unknown number of doubles. Then the program should print the average of all the array elements. (It is easy to go wrong here. You should check your final average with a calculator to be sure that it is correct. There are traps, and you may get a wrong answer without realizing it - so check.)​

Here's an example program in C++ that fulfills the requirements:

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#include <iostream>

#include <fstream>

#include <vector>

using namespace std;

int main() {

   const int ARRAY_SIZE = 1000; // Set a large size for the array

   double array[ARRAY_SIZE];

   double sum = 0.0;

   int count = 0;

   // Read the first five elements from the keyboard

   cout << "Enter the first five elements of the array:\n";

   for (int i = 0; i < 5; i++) {

       cout << "Element " << i + 1 << ": ";

       cin >> array[i];

       sum += array[i];

       count++;

   }

   // Read the remaining elements from a file

   ifstream inputFile("input.txt"); // Replace "input.txt" with your file name

   double num;

   while (inputFile >> num && count < ARRAY_SIZE) {

       array[count] = num;

       sum += array[count];

       count++;

   }

   inputFile.close();

   // Calculate and print the average

   double average = sum / count;

   cout << "Average of array elements: " << average << endl;

   return 0;

}

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In this C++ program, a large array of doubles is declared with a size of 1000. The first five elements are read from the keyboard using a for loop, and the sum and count variables keep track of the cumulative sum and the number of elements entered.

The remaining elements are read from a file named "input.txt" (you should replace it with the actual file name) using an ifstream object. The program continues reading elements from the file as long as there are more numbers and the count is less than the array size.

Finally, the average is calculated by dividing the sum by the count, and it is printed to the console. Remember to replace "input.txt" with the correct file name and double-check the average with a calculator to ensure accuracy.

~~~Harsha~~~

The three-measurement system for confirming that power has been disconnected prior to working on a circuit is known as the ______method . A.test,release,test
B.hot,cold,hot
C.on,off,on
D.measure ,act,measure

Perform an “average case” time complexity analysis for Insertion-Sort, using the given proposition
and definition. I have broken this task into parts, to make it easier.
Definition 1. Given an array A of length n, we define an inversion of A to be an ordered pair (i, j) such
that 1 ≤ i < j ≤ n but A[i] > A[j].
Example: The array [3, 1, 2, 5, 4] has three inversions, (1, 2), (1, 3), and (4, 5). Note that we refer to an
inversion by its indices, not by its values!
Proposition 2. Insertion-Sort runs in O(n + X) time, where X is the number of inversions.
(a) Explain why Proposition 2 is true by referring to the pseudocode given in the lecture/textbook.
(b) Show that E[X] = 1
4n(n − 1). Hint: for each pair (i, j) with 1 ≤ i < j ≤ n, define a random indicator
variable that is equal to 1 if (i, j) is an inversion, and 0 otherwise.
(c) Use Proposition 2 and (b) to determine how long Insertion-Sort takes in the average case.

Dr. Jobst is gathering information by asking clarifying questions. Select the example of a leading question.


"How often do you talk to Dorian about his behavior?"

"Has Dorian always seemed lonely?"

"Did Dorian ever get into fights in second grade?"

"What are some reasons that you can think of that would explain Dorian's behavior?"

Flavia is focused on making fewer mistakes when she types. what is she trying to improve most​