C++ Dot Product using dynamic allocation Write a C++ program that does the follo

Question

C++ Dot Product using dynamic allocation

Write a C++ program that does the following

1. Has the user to input an integer n

2. Dynamically allocates two n-dimensional vectors of doubles

3. Has the user input the components for the two vectors

4. Computes and prints out the dot product

5.Deletes the two vectors

6. All steps above should be in a continuation loop, so the user can repeat the process as many times as they wish

Example input and output from the program

Enter number of components per vector: 2

Enter components for v: 2.1 1.0

Enter components for w: 2.0 1.2

Dot product: 5.4

Compute another dot product (y/n)? y

Enter number of components per vector: 4

Enter components for v: 1 2 3 4

Enter components for w: 2 3 2 -1

Dot product: 10

Compute another dot product (y/n)? n

Here are some few reminders

1. You MUST dynamically allocate the vectors

2. Remember to delete the vectors at the end of each iteration

3. You may assume that all input is valid

Explanation / Answer

ScreenShot

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Program

//Header file for I/O
#include<iostream>
using namespace std;
//Main method
int main()
{
   //Variable for number vector elements count
   int n;
   //Two vectors dynamic declaration
   double *vec1, *vec2;
   //Dot product saving variable
   double dotProduct;
   //Variable for checking the operation complete or not
   char ch='y';
   //Loop until 'n' enter
   while (ch == 'y') {
       //First dotproduct saving variable set to 0
       dotProduct = 0;
       //Prompt user for vector size
       cout << "Enter number of components per vector: ";
       cin >> n;
       //allocate space
       vec1 = new double[n];
       vec2 = new double[n];
       //Enter values into vectors
       cout << "Enter components for v: ";
       for (int i = 0; i < n; i++) {
           cin >> vec1[i];
       }
       cout << "Enter components for w: ";
       for (int i = 0; i < n; i++) {
           cin >> vec2[i];
       }
       //Calculate dot product
       for (int i = 0; i < n; i++) {
           dotProduct += (vec1[i] * vec2[i]);
       }
       //Display dot product
       cout << "Dot product: " << dotProduct << endl;
       //Delete allocated space
       delete[] vec1;
       delete[] vec2;
       //Loop continuation confirmation prompt
       cout << "Compute another dot product (y/n)? ";
       cin >> ch;
   }
   return 0;
}

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Output

Enter number of components per vector: 2
Enter components for v: 2.1 1.0
Enter components for w: 2.0 1.2
Dot product: 5.4
Compute another dot product (y/n)? y
Enter number of components per vector: 4
Enter components for v: 1 2 3 4
Enter components for w: 2 3 2 -1
Dot product: 10
Compute another dot product (y/n)? n
Press any key to continue . . .

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