Inheritance

Practice Inheritance –

What will be the values of x, m and n after the execution of the following statements?

int x, m, n;

m = 10;

n = 15;

x = ++m + n++;

Practice Inheritance –

Which of the following are true about classes and struct?

1. A class is a reference type, whereas a struct is a value type.
2. Objects are created using new, whereas structure variables can be created either using new or without using new.
3. A structure variable will always be created slower than an object.
4. A structure variable will die when it goes out of scope.
5. An object will die when it goes out of scope.

Practice Inheritance –

Which of the following statements are correct about the structure declaration given below?

struct Book {

  private String name;

  protected int totalpages; 

  public Single price; 

  public void Showdata() {  

    Console.WriteLine(name + " " + totalpages + " " + price);

  } 

  Book() {  

    name = " ";

    totalpages = 0; 

    price = 0.0f; 

  } 

} 

Book b = new Book();

1. We cannot declare the access modifier of totalpages as protected.
2. We cannot declare the access modifier of name as private.
3. We cannot define a zero-argument constructor inside a structure.
4. We cannot declare the access modifier of price as public.
5. We can define a Showdata() method inside a structure.

Practice Inheritance –

Which of the following statements is correct?