OOPS Concepts

Which of the following is true in Java?

by

Loading

Practice OOPS Concepts –

Which of the following is true in Java?

What is the output of following program?


			 by

Loading

Practice OOPS Concepts –

What is the output of following program?

#include <iostream>

using namespace std;

 

class Player

{

private:

    int id;

    static int next_id;

public:

    int getID() { return id; }

    Player()  {  id = next_id++; }

};

int Player::next_id = 1;

 

int main()

{

  Player p1;

  Player p2;

  Player p3;

  cout << p1.getID() << " ";

  cout << p2.getID() << " ";

  cout << p3.getID();

  return 0;

}

RunTime Polymorphism is achieved by ___________. 

 

by

Loading

Practice OOPS Concepts –

RunTime Polymorphism is achieved by ___________. 

 

What is the output of the following code


			 by

Loading

Practice OOPS Concepts –

What is the output of the following code

char symbol[3]={‘a’,‘b’,‘c’};

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

  cout << symbol [index];

 

When would a structure variable get destroyed?

by

Loading

Practice OOPS Concepts –

When would a structure variable get destroyed?

How many bytes will the structure variable samp occupy in

by

Loading

Practice OOPS Concepts –

How many bytes will the structure variable samp occupy in memory if it is defined as shown below?

class Trial {

  int i;

  Decimal d; 

}

struct Sample { 

  private int x; 

  private Single y;

  private Trial z;

}

Sample samp = new Sample();

Which of the following is the correct way to define a variable of t

by

Loading

Practice OOPS Concepts –

Which of the following is the correct way to define a variable of the type struct Emp declared below?

struct Emp {

  private String name; 

  private int age; 

  private Single sal;

}
  1. Emp e(); e = new Emp();
  2. Emp e = new Emp;
  3. Emp e; e = new Emp;
  4. Emp e = new Emp();
  5. Emp e;

Which of the following is the correct way of setting values into th

by

Loading

Practice OOPS Concepts –

Which of the following is the correct way of setting values into the structure variable e defined below?

struct Emp { 

  public String name; 

  public int age; 

  public Single sal;

}

Emp e = new Emp();