C++ MCQs with answers Page - 142

Here, you will find a collection of MCQ questions on C++. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which of the following is used to handle exceptions in C++?

  • (A) try-catch block
  • (B) throw-catch block
  • (C) error-exception block
  • (D) catch-throw block

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Q. Which of the following is a valid C++ identifier?

  • (A) 123variable
  • (B) variable_123
  • (C) @variable
  • (D) variable#123

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Q. What is the purpose of the 'main' function in C++?

  • (A) It is the entry point for program execution.
  • (B) It is used for error handling.
  • (C) It defines the program's logic.
  • (D) It is used to define global variables.

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Q. Which of the following operators is used to access members of a class in C++?

  • (A) .
  • (B) ->
  • (C) ::
  • (D) []

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Q. What will be the output of the following C++ code?

int x = 10;
int y = 5;
cout << x / y;

  • (A) 5
  • (B) 2
  • (C) 10
  • (D) None of the above

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Q. Which of the following is the correct way to declare a pointer in C++?

  • (A) int* ptr;
  • (B) ptr int*;
  • (C) pointer int*;
  • (D) int ptr*;

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Q. What is the size of the 'int' data type in C++?

  • (A) 2 bytes
  • (B) 4 bytes
  • (C) 8 bytes
  • (D) Depends on the compiler

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Q. Which of the following is the correct syntax for a constructor in C++?

  • (A) void Constructor() {}
  • (B) Constructor() {}
  • (C) Constructor(void) {}
  • (D) void constructor() {}

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Q. What will be the output of the following code?

int a = 5;
cout << ++a;

  • (A) 5
  • (B) 6
  • (C) Error
  • (D) None of the above

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Q. Which of the following access specifiers makes a class member accessible only within the class and its friends?

  • (A) public
  • (B) private
  • (C) protected
  • (D) friend

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