C++ MCQs with answers Page - 78

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Q. Which of the following is correct about friend functions?

  • (A) Friend cannot access the members of the class directly
  • (B) Friend functions use the dot operator to access members of a class using class objects
  • (C) Friend functions can be private or public
  • (D) All of the above

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Q. Pick the correct statement.

  • (A) Friend functions can access only protected members not the private members
  • (B) Friend functions can be invoked as a normal function
  • (C) Friend functions can be called using class objects
  • (D) Friend functions are in the scope of a class

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Q. Where does keyword ‘friend’ should be placed?

  • (A) block function
  • (B) main function
  • (C) function definition
  • (D) function declaration

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Q. RunTime Polymorphism in c++ is achieved by _______

  • (A) operator overloading
  • (B) function overloading
  • (C) virtual function
  • (D) friend function

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Q. An object in C++ is ________

  • (A) collection of data-members alone
  • (B) just like a global variable
  • (C) same as a class
  • (D) a variable of class data type

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Q. Ability of an operator or function call to take different forms is known as _______

  • (A) Inheritance
  • (B) Overloading
  • (C) Encapsulation
  • (D) Polymorphism

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Q. In OOPS unit of data is called as ________

  • (A) Structures
  • (B) Targets
  • (C) Blocks
  • (D) Bits

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Q. Creating a new class using one or more existing classes is known as _______

  • (A) Overloading
  • (B) Inheritance
  • (C) Polymorphism
  • (D) Encapsulation

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Q. All objects have

  • (A) attributes
  • (B) a set of operations
  • (C) a unique identity
  • (D) All of the above

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Q. When an object has many forms, it has ________

  • (A) Encapsulation
  • (B) Polymorphism
  • (C) Inheritance
  • (D) Scalability

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