Question

1a) Which of the following statements is true about pointers?

a)Pointers contain values as well as addresses of variables.

b)Pointers contain address locations of variables.

c)Pointers do not have any address location of their own.

d)Pointers occupy permanent storage locations inside the hard disk.

1b) What is the correct way of declaring a file input object that opens a file "File.txt"?

a) fstream in_file("File.txt");

b) ifsteam in_file.open("File.txt");

c) ifstream in_file("File.txt");

d) in_file.open("File.txt");

2a)  What is the relationship between a base class and a derived class called?

Polymorphism

Encapsulation

Aggregation

Inheritance

Answer 1

1. a. Answer

The correct answer is option b"Pointers contain address location of a variable"

1. b Answer

The correct answer is option b "ifstream in_file.open("File.txt") "

Here in_file is a input file stream variable.

2 a) Answer

The correct answer is "Inheritance"

Inheritance: Inheritance is a relationship between a base class and derived class. In inheritance derived class inherit the properties of base class.

Polymorphism: Polymorphism is defines as an ability of an object to take more than one form.

Encapsulation: Encapsulation is basically wrapping up data and methods into a single unit.