Answer Posted / p govind rao

if an object of a derived class is assigned to a base class
object,the compiler accepts it.but it copies only the base
portion of the object


#include<iostream>
using namespace std;

class base
{
public:
int i,j;
base(){i=2;j=3;}
virtual void show(){cout<<"i = "<<i<<endl<<"j = "<<j<<endl;}
};

class derived :public base
{
public :
int k;
derived(){k=4;}
void show() {
base::show();
cout<<"k = "<<k<<endl;
}
};

int main()
{
base b;
derived d;
d.show();
b=d;

b.show();

return 0;
}

OutPut is
i = 2
j = 3
k = 4
---------------
i = 2
j = 3

here b contains i and j where as d contains i,j&k.On
assignment only i and j of the d get copied into i and j of
b. k doesnot be copied. on the effect object d got sliced.

What are classes oop?

596

---

can we make game by using c

3415

---

Why interface is used?

549

---

What is abstract class in oops?

596

---

Do you know about multiple inheritance?

637

---

---

INSTANCE FIELDS DECLARED private ARE ACCESSIBLE BY THE METHODS ONLY.CAN WE CHANGE THE private FIELD OF AN OBJECT IN A METHOD OF SOME OTHER OBJECT OF THE SAME CLASS?

1630

---

What is overloading and its types?

612

---

What are benefits of oop?

631

---

Give two or more real cenario of virtual function and vertual object

1849

---

What is encapsulation c#?

600

---

What do you mean by abstraction?

608

---

They started with the brief introduction followed by few basic C++ questions on polumorphism, inheritance and then virtual functions. What is polymorphims? How you will access polymorphic functions in C? How virtual function mechanism works?

1392

---

to find out the minimum of two integer number of two different classes using friend function

1637

---

design a c++ class for the chess board,provide a c++ class definition for such class(only class definition is required)

6143

---

What is for loop and its syntax?

595

---