Q.1 what is the output of following program?
#include <iostream>
using namespace std;
class A
{
public:
A()
{ cout<<"Constructing A"<<endl;
}
~A()
{ cout<<"Destructing A"<<endl;
}
};
class B : public A
{
public:
B()
{
cout<<"Constructing B"<<endl;
}
~B()
{cout<<"Destructing B"<<endl;
}
};
int main()
{
A *b=new B;
delete b;
}
how is its output as:
constructing A
constructing B
destructing B
??
Q2. Determine output.
class A
{ int a;
public:
virtual void f()
{
}
};
class B : private A
{ int b;
public:
void f()
{
}
};
int main()
{
cout<<sizeof(A)<<endl;
cout<<sizeof(B)<<endl;
}
its output is:
8 12
virtual functions do occupy 4 bytes ?? how??
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