#include <iostream>
#include <string>

using namespace std;

class SimpleT {

    public:
       SimpleT(string word ="default") {
          name = word;
          cout << "\tIn SimpleT constructor " << word << endl;
       }
       string name;
};

class NoDefaultT{
    public:
        NoDefaultT() = delete;
        NoDefaultT(int i, char x = 'c'): 
            a{"override A"}, myData{i} , myLetter(x), c("hello")
        { 
            cout << "In NoDefaultT constructor " << endl;
            cout  << "The name is " << c.name << endl;
            cout << "My int is " << myData << " my letter is " << myLetter << endl;
        }

        int Data(void) const {
            return myData;
        }
        
        int Letter(void) const {
            return myLetter;
        }
    private:
        SimpleT a{"First"};
        int myData;
        char myLetter;
        SimpleT b{"second"};
        SimpleT c;
};

class NeedsCtorInitT{
    public:
        NeedsCtorInitT():
           data1(4), 
           data2(3),
           //data2{5, 'x'},
           data3{22} 
        {
        };

    private:
        int data1;
        NoDefaultT data2;
        int data3;

};


class ErrorT{
    public:
        ErrorT( int a = 5, int b = 10) :
           data2(b), data1(a * data2)
        {
            cout << "data1 = " << data1 << endl;
            cout << "data2 = " << data2 << endl;
        };
    private:
        int data1, data2;
};


int main() {
    NoDefaultT a(4);

    NeedsCtorInitT b;
    cout << endl << endl;
    ErrorT c;

    cout << " The data for a is " << a.Data() << endl;

    return 0;
}