Answer Posted / itishree

A class is derive from a class which is derive from another
class is known as multilevel inheritance.
example-grandpa->papa->son
another example:
class A
{
protected:
int x;
public:
void showA()
{
cout<<"enter a value for x:"<<endl;
cin>>x;
}
};
class B:public A
{
protected:
int y;
public:
void showB()
{
cout<<"enter value for y:";
cin>>y;
}
};
class C:public B
{
public:
void showC()
{
showA();
showB();
cout<<"x*y ="<<x*y;
}
};
void main()
{
C ob1;
ob1.showc();
}

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