#include <iostream>

using namespace std;

int main(){

    cout << "Hello world!" << endl;

    cout << "This is how to use a for loop:" << endl;
    for(int i = 0; i < 3; i++){
        cout << i << endl;
            }


    cout << "This is how to store two arrays of numbers and add them together" << endl;
    double A[3];
    double B[3];
    for (int i = 0; i < 3; i++){
        A[i] = i;
        B[i] = 2*i;
    }

    cout << "A = [";
    for (int i = 0; i < 3; i++){
        cout << A[i] << " ";
      }
    cout << "]" << endl;

    cout << "B = [";
    for (int i = 0; i < 3; i++){
        cout << B[i] << " ";
      }
    cout << "]" << endl;

    cout << "A+B = [";
    for (int i = 0; i < 3; i++){
        cout << A[i]+B[i] << " ";
      }
    cout << "]" << endl;

    return 0;

    }