multiple inheritance in c++

//multiple inheritance
#include <iostream.h>
#include <conio.h>

class A
{
protected:
    int a;
public:
        A()
    {
    cout<<"constructor A executed"<<endl;
    }

        void input()
    {
    cout<<"enter a ";
    cin>>a;
    }

        void output()
    {
    cout<<a<<endl;
    }
};


class B
{
protected:
    int b;
public:
        B()
    {
    cout<<"constructor B executed"<<endl;
    }

        void get()
    {
    cout<<"enter b ";
    cin>>b;
    }

        void show()
   {
    cout<<b<<endl;
    }
};


class C:public A,public B     //constructor A will be  executed first then B then C and when A is replaced by B then B will be executed first
{
public:
        C()
    {
    cout<<"constructor C executed"<<endl;
    }

        void inc()
    {
    b++;
    cout<<"increament in b: "<<b<<endl;
    }
};


        void main()
    {
    C obj;
    obj.input();
    obj.output();
    obj.get();
    obj.show();
    obj.inc();

     getch();
     }