Introduction to C++ MCQ question and answer with solution

51

What is std in C++?

A) std is a standard class in C++ B) std is a standard namespace in C++ C) std is a standard header file in C++ D) std is a standard file reading header in C++

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Answer & Solution

Answer: Option B

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52

What is dynamic binding?

A) The process of linking the actual code with a procedural call during run-time B) The process of linking the actual code with a procedural call during compile-time C) The process of linking the actual code with a procedural call at any-time D) All of the mentioned

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Answer & Solution

Answer: Option A

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53

What happens if the following line is executed in C and C++?

const int a;

A) Error in both C and C++ B) Warning in both C and C++ C) Error in C and successful execution in C++ D) Error in C++ and successful execution in C

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Answer: Option D

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54

What happens if we run the following code in both C and C++?

#include<stdio.h>
struct STRUCT
{
  int a = 5;
  int func()
  {
      printf("%d\n", a);
  }
};
int main()
{
  struct STRUCT s;
  s.func();
  return 0;
}

A) The program runs fine and both prints output "HELLO THIS IS STRUCTURE" B) The program gives an error in case of C but runs perfectly in case of C++ C) The program gives an error in case of C++ but runs perfectly in case of C D) The program gives an error in case of both C and C++

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Answer: Option B

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55

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

#include<iostream>
using namespace std;
class A
{
  ~A(){
     cout<<"Destructor called\n";
   }
};
int main()
{
    A *a1 = new A();
    A *a2 = new A();
    return 0;
}

A) Destructor called B) Destructor called
Destructor called C) Error D) Nothing is printed

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Answer: Option D

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56

Which of the following is called extraction/get from operator?

A) << B) >> C) > D) <

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Answer & Solution

Answer: Option B

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57

Which of the following is called address operator?

A) * B) & C) _ D) %

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Answer & Solution

Answer: Option B

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58

What is name mangling in C++?

A) The process of adding more information to a function name so that it can be distinguished from other functions by the compiler B) The process of making common names for all the function of C++ program for better use C) The process of changing the names of variable D) The process of declaring variables of different types

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Answer: Option A

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59

What is the size of a boolean variable in C++?

A) 1 bit B) 1 byte C) 4 bytes D) 2 bytes

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Answer & Solution

Answer: Option A

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60

What is the size of a character literal in C and C++?

A) 4 and 1 B) 1 and 4 C) 1 and 1 D) 4 and 4

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Answer: Option A

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Introduction to C++ MCQ question and answer with solution | C++ Programimg MCQs