C++ MCQ Questions with answers and solutions Page 16

Q. What is the output of the following C++ program?

Code:

#include <iostream>
using namespace std;
int main()
{
  cout << sizeof(char);
  cout << sizeof(int);
  cout << sizeof(float);
  return 0;
}

(A) 1 8 8
(B) 1 4 8
(C) 1 4 4
(D) None of the above

💬 Discuss

✅ Correct Answer: (C) 1 4 4

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:11 pm in C++

Q. Which function is used to read a single character in the console in C++?

(A) scanf(c)
(B) read(c)
(C) getline(c)
(D) cin.get(c)

💬 Discuss

✅ Correct Answer: (D) cin.get(c)

Explanation: In C , the cin.get() function reads a single character from the console.

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:11 pm in C++

Q. Which function is used to write a single character to the console in C++?

(A) printf(c)
(B) write(c)
(C) cout.put(c)
(D) cout.putline(c)

💬 Discuss

✅ Correct Answer: (C) cout.put(c)

Explanation: In C , the cout.put() function writes a single character to the console.

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:12 pm in C++

Q. The size of an object or type can be determined with which operator?

(A) malloc
(B) sizeof
(C) malloc
(D) calloc

💬 Discuss

✅ Correct Answer: (B) sizeof

Explanation: The sizeof operator gives the size of an object or type.

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:13 pm in C++

Q. Which of the following are true about static member function?

1. They can access non-static data members.
2. They can call only other static member functions.
3. They can access global functions and data.
4. They can have this pointer.
5. They cannot be declared as const or volatile.

(A) Only 2
(B) Only 2,5
(C) Only 2,3,4,5
(D) Only 2 , 3 , 5

💬 Discuss

✅ Correct Answer: (D) Only 2 , 3 , 5

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:13 pm in C++

Q. class X, class Y and class Z are derived from class BASE. This is ______ inheritance.

(A) Multiple
(B) Multilevel
(C) Hierarchical
(D) Single

💬 Discuss

✅ Correct Answer: (C) Hierarchical

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:14 pm in C++

Q. When base class is derived in protected mode, then_____________ .

1. public members of base class become private members of derived class.
2. public members of base class become protected members of derived class.
3. public members of base class become public members of derived class.
4. protected members of base class become protected members of derived class.
5. protected members of base class become private members of derived class.
6. protected members of base class become public members of derived class.

(A) Only 1, 5
(B) Only 1, 6
(C) Only 2, 6
(D) Only 2, 4

💬 Discuss

✅ Correct Answer: (D) Only 2, 4

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:15 pm in C++

Q. Streams that will be performing both input and output operations must be declared as class _________ .

(A) iostream
(B) fstream
(C) stdstream
(D) Stdiostream

💬 Discuss

✅ Correct Answer: (B) fstream

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:15 pm in C++

Q. Exception handlers are declared with ____________ keyword.

(A) Try
(B) catch
(C) throw
(D) Finally

💬 Discuss

✅ Correct Answer: (B) catch

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:16 pm in C++

Q. How many times does the “cout” in line 12 run?

Code:

#include  
using namespace std; 
  
int main() 
{ 
    int n = 10; 
    for (int i = 0; i < n; i++ ) 
    { 
        n++; 
        continue; 
        cout << n; 
    } 
  
    return 1;
}

(A) 10
(B) 11
(C) 1
(D) The “cout” never runs.

💬 Discuss

✅ Correct Answer: (D) The “cout” never runs.

Explanation: The “continue” instruction will never let the “cout” instruction be executed and therefore never executed.

Published by Ram Sharma ⭐ 193.88K Points at 19-Jun-2022 06:17 pm in C++

C++ MCQs with answers Page - 16

Q. What is the output of the following C++ program?

Q. Which function is used to read a single character in the console in C++?

Q. Which function is used to write a single character to the console in C++?

Q. The size of an object or type can be determined with which operator?

Q. Which of the following are true about static member function?

1. They can access non-static data members.
2. They can call only other static member functions.
3. They can access global functions and data.
4. They can have this pointer.
5. They cannot be declared as const or volatile.

Q. class X, class Y and class Z are derived from class BASE. This is ______ inheritance.

Q. Streams that will be performing both input and output operations must be declared as class _________ .

Q. Exception handlers are declared with ____________ keyword.

Q. How many times does the “cout” in line 12 run?

Programming Categories

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C++ MCQs with answers Page - 16

Q. What is the output of the following C++ program?

Q. Which function is used to read a single character in the console in C++?

Q. Which function is used to write a single character to the console in C++?

Q. The size of an object or type can be determined with which operator?

Q. Which of the following are true about static member function? 1. They can access non-static data members. 2. They can call only other static member functions. 3. They can access global functions and data. 4. They can have this pointer. 5. They cannot be declared as const or volatile.

Q. class X, class Y and class Z are derived from class BASE. This is ______ inheritance.

Q. Streams that will be performing both input and output operations must be declared as class _________ .

Q. Exception handlers are declared with ____________ keyword.

Q. How many times does the “cout” in line 12 run?

Programming Categories

📱 Download Our App

Q. Which of the following are true about static member function?

1. They can access non-static data members.
2. They can call only other static member functions.
3. They can access global functions and data.
4. They can have this pointer.
5. They cannot be declared as const or volatile.