placement c++ programming language Question

1) Determine the output of the 'C++' Codelet.

class base

{  

public : 

out() 

{ 

cout<<"base ";  

}  

};

class deri{ 

public : out() 

{ 

cout<<"deri "; 

}   

};

void main()

{ deri dp[3];

base *bp = (base*)dp;

for (int i=0; i<3;i++)

(bp++)->out();

}

2) Justify the use of virtual constructors and destructors in C++.

3) Each C++ object possesses the 4 member fns,(which can be declared by the programmer explicitly or by the implementation if they are not available). What are those 4 functions?

4) What is wrong with this class declaration?

class something

{

char *str;

public:

  something(){

  st = new char[10]; }

 ~something()

 {

  delete str; 

 }

};

5) Inheritance is also known as -------- relationship. Containership as   ________ relationship.

6)  When is it necessary to use member-wise initialization list  (also known as header initialization list) in C++?

7) Which is the only operator in C++ which can be overloaded but NOT inherited.

8) Is there anything wrong with this C++ class declaration?

class temp

{

 int value1; 

 mutable int value2;

 public :

  void fun(int val) 

const{

  ((temp*) this)->value1 = 10;

  value2 = 10;

  }

};