// short program that manipulates a mix of int variables, int pointers, int
// references, string pointers, and string objects

#include <iostream>
#include <string>

using namespace std;

int main() {
    int x = 13;
    int y = 28;

    int * p = nullptr;

    cout << "x = " << x << ", y = " << y << ", p = " << p << endl;
    cout << endl;

    p = &x;
    *p *= 2;
    cout << "x = " << x << ", y = " << y << ", p = " << p << endl;
    cout << endl;

    p = &y;
    *p = *p + 10;
    (*p)++;
    cout << "x = " << x << ", y = " << y << ", p = " << p << endl;
    cout << endl;

    int & a = x;
    a = a * 3;
    cout << "x = " << x << endl;
    cout << &x << " " << &a << endl;
    cout << endl;

    p = new int(42);
    cout << "p = " << p << endl;

    const char * text = "hello there";
    string s = text;

    cout << "s = " << s << endl;
    cout << "s address = " << &s << endl;
    cout << endl;
    
    string * p2 = &s;
    cout << "p2 = " << p2 << endl;
    cout << (*p2).size() << endl;
    (*p2)[1] = '*';
    cout << "s = " << s << endl;

    return 0;
}