Sapient Technical and HR Interview Questions - Wikitechy https://www.wikitechy.com/interview-questions/tag/sapient-technical-and-hr-interview-questions/ Interview Questions Tue, 14 Sep 2021 05:15:13 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png Sapient Technical and HR Interview Questions - Wikitechy https://www.wikitechy.com/interview-questions/tag/sapient-technical-and-hr-interview-questions/ 32 32 The operator when overloaded in a class ? https://www.wikitechy.com/interview-questions/cpp/the-operator-when-overloaded-in-a-class/ https://www.wikitechy.com/interview-questions/cpp/the-operator-when-overloaded-in-a-class/#respond Mon, 12 Jul 2021 23:03:08 +0000 https://www.wikitechy.com/interview-questions/?p=392

The operator when overloaded in a class ?

A. Virtual polymorphism

B. Ad-hoc polymorphism

C. Transient polymorphism

D. Pseudo polymorphism

Answer : B. Ad-hoc polymorphism

Explanation

  • Polymorphism means having many forms that in a single entity can takes more than one form.
polymorphism in cpp
The polymorphism classes are given below:
    • Subtype polymorphism is also known as runtime polymorphism
    • Parametric polymorphism is also known as compile-time polymorphism
    • Ad-hoc polymorphism is also known as overloading
    • Coercion is also known as (implicit or explicit) casting
]]> https://www.wikitechy.com/interview-questions/cpp/the-operator-when-overloaded-in-a-class/feed/ 0 Syntax for Pure Virtual Function is ? https://www.wikitechy.com/interview-questions/cpp/syntax-for-pure-virtual-function-is/ https://www.wikitechy.com/interview-questions/cpp/syntax-for-pure-virtual-function-is/#respond Mon, 12 Jul 2021 22:58:10 +0000 https://www.wikitechy.com/interview-questions/?p=388

Syntax for Pure Virtual Function is ?

A. virtual void show()==0

B. void virtual show()==0

C. virtual void show()=0

D. void virtual show()=0

Answer : B. virtual void show()==0

Explanation :

  • In C++, A pure virtual function or abstract function is a virtual function for which we don’t have implementation, we only declare it. A pure virtual function is declared by assigning 0 in declaration.

Syntax

// An abstract class 
class Sample
{    
    // Data members of class 
public: 
    // Pure Virtual Function 
    virtual void show() = 0; 
    
   /* Other members */
};
]]> https://www.wikitechy.com/interview-questions/cpp/syntax-for-pure-virtual-function-is/feed/ 0 Find the wrong statement about Abstract Class ? https://www.wikitechy.com/interview-questions/cpp/find-the-wrong-statement-about-abstract-class/ https://www.wikitechy.com/interview-questions/cpp/find-the-wrong-statement-about-abstract-class/#respond Mon, 12 Jul 2021 22:54:00 +0000 https://www.wikitechy.com/interview-questions/?p=386

Find the wrong statement about Abstract Class ?

A. We can’t create its objects

B. We can’t create pointers to an abstract class

C. It contains at least one pure virtual function

D. We can create references to an abstract class

Answer : B. We can’t create pointers to an abstract class

Explanation :

  • Abstract Class is a class which contains atleast one Pure Virtual function.
  • An abstract class is a class that is designed to be specifically used as a base class.
  • It is used to provide an Interface for its sub classes.
  • Classes inheriting an Abstract Class must provide definition to the pure virtual function, otherwise they will also become abstract class.
  • You declare a pure virtual function by using a pure specifier (= 0) in the declaration of a virtual member function in the class declaration.

Example

class AB {
public:
  virtual void f() = 0;
};
]]> https://www.wikitechy.com/interview-questions/cpp/find-the-wrong-statement-about-abstract-class/feed/ 0 C++ supports run time polymorphism with the help of virtual functions, which is called ______ binding https://www.wikitechy.com/interview-questions/cpp/c-supports-run-time-polymorphism-with-the-help-of-virtual-functions-which-is-called-______-binding/ https://www.wikitechy.com/interview-questions/cpp/c-supports-run-time-polymorphism-with-the-help-of-virtual-functions-which-is-called-______-binding/#respond Mon, 12 Jul 2021 22:49:38 +0000 https://www.wikitechy.com/interview-questions/?p=384

C++ supports run time polymorphism with the help of virtual functions, which is called ______ binding.

A. Dynamic

B. Run time

C. Early binding

D. Static

Answer : A. Dynamic

Explanation :

  • Dynamic binding (dynamic dispatch) means that a block of code executed with reference to a procedure call is determined at run time.
]]> https://www.wikitechy.com/interview-questions/cpp/c-supports-run-time-polymorphism-with-the-help-of-virtual-functions-which-is-called-______-binding/feed/ 0 A virtual function that has no definition within the base class is called ? https://www.wikitechy.com/interview-questions/cpp/a-virtual-function-that-has-no-definition-within-the-base-class-is-called/ https://www.wikitechy.com/interview-questions/cpp/a-virtual-function-that-has-no-definition-within-the-base-class-is-called/#respond Mon, 12 Jul 2021 22:45:35 +0000 https://www.wikitechy.com/interview-questions/?p=380 A virtual function that has no definition within the base class is called ?

A. Pure virtual function

B. Pure static function

C. Pure Const function

D. Virtual Function

Answer : A. Pure virtual function

]]> https://www.wikitechy.com/interview-questions/cpp/a-virtual-function-that-has-no-definition-within-the-base-class-is-called/feed/ 0 Which of the following statements about virtual base classes is correct ? https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-statements-about-virtual-base-classes-is-correct/ https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-statements-about-virtual-base-classes-is-correct/#respond Mon, 12 Jul 2021 22:41:41 +0000 https://www.wikitechy.com/interview-questions/?p=378

Which of the following statements about virtual base classes is correct ?

A. It is used to provide multiple inheritance .

B. It is used to avoid multiple copies of base class in derived class .

C. It is used to allow multiple copies of base class in a derived class.

D. It allows private members of the base class to be inherited in the derived class.

Answer : B. It is used to avoid multiple copies of base class in derived class .

Explanation

  • When two or more objects are derived from a common base class, we can prevent multiple copies of the base class being present in an object derived from those objects by declaring the base class as virtual when it is being inherited such a base class is known as virtual base class.
  • Virtual base classes, used in virtual inheritance, is a way of preventing multiple “instances” of a given class appearing in an inheritance hierarchy when using multiple inheritance.
Virtual Base Class
]]> https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-statements-about-virtual-base-classes-is-correct/feed/ 0 Which of the following concepts means wrapping up of data and functions together ? https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-concepts-means-wrapping-up-of-data-and-functions-together/ https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-concepts-means-wrapping-up-of-data-and-functions-together/#respond Mon, 12 Jul 2021 22:36:01 +0000 https://www.wikitechy.com/interview-questions/?p=376

Which of the following concepts means wrapping up of data and functions together ?

A. Abstraction

B. Encapsulation

C. Inheritance

D. None

Answer : B. Encapsulation

]]> https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-concepts-means-wrapping-up-of-data-and-functions-together/feed/ 0 Which of the following can access private data members or member functions of a class ? https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-can-access-private-data-members-or-member-functions-of-a-class/ https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-can-access-private-data-members-or-member-functions-of-a-class/#respond Mon, 12 Jul 2021 22:32:20 +0000 https://www.wikitechy.com/interview-questions/?p=374

Which of the following can access private data members or member functions of a class ?

A. Any function in the program.

B. All global functions in the program.

C. Any member function of that class.

D. Only public member functions of that class.

Answer : C. Any member function of that class.

Explanation :

  • Accessing a data member depends only on the access control of that data member. If its public, then the data member can be easily accessed using the direct member access (.) operator with the object of that class.
  • If, the data member is defined as private or protected, then we cannot access the data variables directly. Then we will have to create special public member functions to access, use or initialize the private and protected data members.
  • These member functions are also called Accessors and Mutator methods or getter and setter functions.
]]> https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-can-access-private-data-members-or-member-functions-of-a-class/feed/ 0 Which of the following access specifiers is used in a class definition by default ? https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-access-specifiers-is-used-in-a-class-definition-by-default/ https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-access-specifiers-is-used-in-a-class-definition-by-default/#respond Mon, 12 Jul 2021 22:28:07 +0000 https://www.wikitechy.com/interview-questions/?p=372

Which of the following access specifiers is used in a class definition by default ?

A. Protected

B. Public

C. Private

D. Friend

Answer : C. Private

Explanation :

  • Public – The members declared as Public are accessible from outside the Class through an object of the class.
  • Protected – The members declared as Protected are accessible from outside the class but only in a class derived from it.
  • Private – These members are only accessible from within the class. No outside Access is allowed.
  • Friend – A friend function of a class is defined outside that class scope but it has the right to access all private and protected members of the class.
]]> https://www.wikitechy.com/interview-questions/cpp/which-of-the-following-access-specifiers-is-used-in-a-class-definition-by-default/feed/ 0 State whether the following statements about inheritance are True or False. https://www.wikitechy.com/interview-questions/cpp/state-whether-the-following-statements-about-inheritance-are-true-or-false/ https://www.wikitechy.com/interview-questions/cpp/state-whether-the-following-statements-about-inheritance-are-true-or-false/#respond Mon, 12 Jul 2021 22:19:30 +0000 https://www.wikitechy.com/interview-questions/?p=368

State whether the following statements about inheritance are True or False.
I . A public member of a class can be accessed by its own objects using the dot operator.
II . While inheriting, the private members of the base class will never become the members of its derived class.

A. True, False

B. False, True

C. True, True

D. False, False

Answer : C. True, True

]]> https://www.wikitechy.com/interview-questions/cpp/state-whether-the-following-statements-about-inheritance-are-true-or-false/feed/ 0