57templatecode.cpp

#include <iostream>
#include <cstring>
#include <fstream>
using namespace std;

template <class T>
class Vector
{
    int size;

public:
    T *arr;
    Vector(int m) : size(m)
    {
        arr = new T[size];
    }
    T DotProduct(Vector v)
    {
        T d = 0;
        for (int i = 0; i < size; i++)
        {
            d += this->arr[i] * v.arr[i];
        }
        return d;
    }
};
int main()
{
    Vector<float> v1(3), v2(3);
    cout << "Enter first vector dimensions i, j, k : " << endl;
    for (int i = 0; i < 3; i++)
    {
        cin >> v1.arr[i];
    }
    cout << "Enter second vector dimensions i, j, k : " << endl;
    for (int i = 0; i < 3; i++)
    {
        cin >> v2.arr[i];
    }
    float dp = v1.DotProduct(v2);
    cout << "V1 . V2 = " << dp << endl;
    return 0;
}