C++ MCQs with answers Page - 60

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 keyword supports dynamic method resolution?

  • (A) Typeid
  • (B) Dynamic
  • (C) Virtual
  • (D) abstract

A

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Q. Which of the following is the most preferred way of throwing and handling exceptions?

  • (A) Throw the pointer value and provide catch for the pointer type.
  • (B) Throw by value and catch by value
  • (C) Throw by reference and catch by reference.
  • (D) Throw by value and catch by reference.

A

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Q. Which of the following is not true about preprocessor directives

  • (A) They have to end with a semi colon
  • (B) They begin with a hash symbol
  • (C) They are processed by a preprocessor
  • (D) They form an integral part of the code

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Q. What’s wrong? while( (i < 10) && (i > 24))

  • (A) the test condition is always true
  • (B) the test condition is always false
  • (C) the while loop is an exit-condition loop
  • (D) the logical operator && cannot be used in a test condition

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Q. A continue statement causes execution to skip to

  • (A) the next iteration of the loop
  • (B) the statement following the continue statement
  • (C) the first statement after the loop
  • (D) the return 0; statement

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Q. What’s wrong?

Code: 
(x = 4 && y = 5) ? (a = 5) ; (b = 6);
  • (A) the question mark should be an equal sign
  • (B) there are too many variables in the statement
  • (C) the conditional operator is only used with apstrings
  • (D) the first semicolon should be a colon

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Q. What’s wrong?

Code: 
for (int k = 2, k <=12, k++)
  • (A) the variable must always be the letter i when using a for loop
  • (B) there should be a semicolon at the end of the statement
  • (C) the commas should be semicolons
  • (D) the increment should always be ++k

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Q. Which of the following is not recommended in a header file?

  • (A) Function definitions
  • (B) Template definitions
  • (C) Class definitions
  • (D) Type definitions (typedefs)

A

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Q. Which of the STL containers store the elements contiguously (in adjacent memory locations)?

  • (A) std::list
  • (B) std::set
  • (C) std::vector
  • (D) std::map

A

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Q. Which of the following is not a standard exception built in C++.

  • (A) std::bad_creat
  • (B) std::bad_alloc
  • (C) std::bad_cast
  • (D) std::bad_typeid

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