C++ MCQs with answers Page - 66

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Q. Which of the following functions below can be used Allocate space for array in memory?

  • (A) calloc()
  • (B) malloc()
  • (C) Realloc()
  • (D) Both A and B

A

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Q. there is more than one statement in the block of a for loop, which of the following must be placed at the beginning and the ending of the loop block?

  • (A) arrows < >
  • (B) brackets [ ]
  • (C) braces { }
  • (D) parentheses ( )

A

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Q. Which of the following members do get inherited but become private members in child class

  • (A) Private
  • (B) Protected
  • (C) Public
  • (D) All the above

A

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Q. Which looping process is best used when the number of iterations is known?

  • (A) for
  • (B) while
  • (C) do-while
  • (D) looping processes require that the iterations be known

A

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Q. In a C language ‘3’ represents

  • (A) A digit
  • (B) A character
  • (C) An integer
  • (D) A word

A

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Q. What is the implicit pointer that is passed as the first argument for nonstatic member functions?

  • (A) ‘self’ pointer
  • (B) std::auto_ptr pointer
  • (C) Myself’ pointer
  • (D) ‘this’ pointer

A

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Q. Which of the following operators can be overloaded?

  • (A) . (dot or member access operator)
  • (B) & (address-of operator)
  • (C) size of operator
  • (D) ?: (conditional operator)

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Q. Which of the following is not a valid conditional inclusions in preprocessor directives

  • (A) #ifdef
  • (B) #ifundef
  • (C) #endif
  • (D) #elif

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Q. Minimum number of temporary variable needed to swap the contents of 2 variables is:

  • (A) 0
  • (B) 1
  • (C) 2
  • (D) 3

A

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Q. The output of this program is

Code: 
int a = 10;
void main()
{
int a = 20;
cout << a << ::a;
}
  • (A) 20 20
  • (B) 20 10
  • (C) 10 20
  • (D) Syntax error

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