Anyone can explain this?? Generally a constructor of base class doesn't inherit to derived class..... But here I'm confused...

Question

#include <iostream.h>
using namespace std;
class A
{
public :
A()
{
pp cout<<1;
}
};
class B:public A
{
public:
B()
{
cout<<2;
}
};
main()
{
A a;
B b;
}
//output is 112

Answer 1

the constructior is not inherited, this is correct, but when you derive a class and make an instance of that derived class, the constructor of base class is called, then the derived class constructior