t64_my_first_template.cpp

    /* */

#include<iostream>
using namespace std;

template <class T>
class vector{
    public:
        T *arr;
        int size;
        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); //vector 1 with a float data type
    v1.arr[0] = 1.4;
    v1.arr[1] = 3.3;
    v1.arr[2] = 0.1;
    vector<float> v2(3); //vector 2 with a float data type
    v2.arr[0]=0.1;
    v2.arr[1]=1.90;
    v2.arr[2]=4.1;
    float a = v1.dotProduct(v2);
    cout<<a<<endl; 
    return 0;
}