Write C++ Program 2-1 Motivation: This is a simple project to print the dot prod

Question

Write C++ Program

2-1 Motivation:

This is a simple project to print the dot product of two integer array of size N, where N is provided by user as input and can be very large.

The input format is like this:

4

1 2 3 4

4 5 6 7

where the first number is N, then followed by one line of input with N numbers, which is the first array; it will then read in another line of input with N numbers, which is the second array; The dot product of two arrays A and B is defined as:

For the above example, the dot product is 1 × 4 + 2 × 5 + 3 × 6 + 4 × 7 = 50.

2-2 Requirements

• You code need to be able to run multiple times, until the user input N as a negative number.

• You must create two functions: 1) ReadInput will create an array based on the argument, then read in all elements of an array; 2)

DotProduct to find the dot product of two arrays. All these functions should be declared in a header file, and implemented in a source file.

• Each run, you need to get N from the user, then call ReadInput twice, DotProduct once and print the result.

• You need to turn in three files: makefile, main.C, xArray.C, xArray.h.

2-2 Notes

• xArray.h holds the prototype of the two functions, like: int* ReadInput(int n); // n is the number of elements for an array int DotProduct(int* a, int* b, int length);

• You will gain 6 points if your code is fully functional as described, and with no memory violation and/or memory leaks. Your code should be readable, so please put comments in the code

Explanation / Answer

I just write source code.it may help to you.

#include<iostream>

using namespace std;
int main()
{
    int n,i;

    do
    {
cout<<"enter array of size:";
        cin>>n;

int A[n];
       int B[n],sum=0;
       cout<<"enter A elements: ";
       for(i=0;i<n;i++)
        cin>>A[i];
        cout<<"enter B elements: ";
       for(i=0;i<n;i++)
        cin>>B[i];

        for(i=0;i<n;i++)
            sum=sum+A[i]*B[i];
        cout<<"dot product is:"<<sum<<endl;

    }while(n>0);

return 0;}

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