#include <iostream>
#include <vector>

using namespace std;

class ItemT {
   public:
        ItemT(){
            cout << " In the default constructor for an ItemT" << endl;
        }

        void Talk(void) const{
            cout << "Hello" << endl;
        }
   private:
        int data1{8};
};

class ThingT {
    public: 
          ThingT() = delete;
          ThingT(int i) {
              cout << "Integer constructor for a ThingT i = " << i  << endl;
          }
          ThingT(int i, char j) {
              cout << "Integer, char constructor for thingT i = " << i 
                   << " j = " << j << endl;
          }
};


int main() {
   // bad the compiler thinks the next line is a function prototype for myItem
   /*
    ItemT myItem();

    myItem.Talk();
    /**/

    // good declarations, there is a default constructor.
    cout << "Declaring a vector of 3 ItemTs" << endl;
    vector<ItemT> items(3);
    cout << endl;

    cout << "Declaring an array of 4 ItemTs" << endl;
    ItemT moreItems[4];
    cout << endl;
    
    // this will not work, no default constructor.
    //ThingT data[2];

    // this will
    cout << "A vector of things with the int constructor" << endl;
    vector<ThingT> things{3,4,5};
    cout << endl;

    cout << "Two different ways to call a constructor " << endl;
    ThingT data1{1,'c'};
    ThingT data2(2,'d');
    cout << endl;

    return 0;

}