C++ Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to C++ Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - Choose the operator which cannot be overloaded.

A - /

B - ()

C - ::

D - %

Answer : C

Explaination

Scope resolution (::) is not permitted to be overloaded.

Q 2 - Which data type can be used to hold a wide character in C++?

A - unsigned char;

B - int

C - wchar_t

D - none of the above.

Answer : C

Explaination

wchar_t is the data type using which we can hold Unicode characters.

Q 3 - We can have varying number of arguments for the overloaded form of () operator.

A - True

B - False

Answer : A

Explaination

Answer : D

Explaination

Q 5 - What is the output of the following program?

#include<iostream>

using namespace std;
class Base {
public:
   void f() {
      cout<<"Base\n";
   }
};
class Derived:public Base {
public:
   void f() {
      cout<<"Derived\n";
   }
};
main() { 
   Derived obj; 
   obj.Base::f();
}

A - Base

B - Derived

C - Compile error

D - None of the above.

Answer : A

Explaination

The method f() inherited from Base is referred using :: operator.

#include<iostream>

using namespace std;
class Base {
public:
   void f() {
      cout<<"Base\n";
   }
};
class Derived:public Base {
public:
   void f() {
      cout<<"Derived\n";
   }
};
main() { 
   Derived obj; 
   obj.Base::f();
}

Answer : B

Explaination

Defining a templated class is defining a generic class. Hence functionality of the class is generalized for several types, if applicable.

Q 7 - What is the output of the following program?

#include<iostream>

using namespace std;
main() {
   char s[] = "hello", t[] = "hello";
   if(s==t)
      cout<<"eqaul strings";
}

A - Equal strings

B - Unequal strings

C - No output

D - Compilation error

Answer : C

Explaination

No output, as we are comparing both base addresses and are not same.

#include<iostream>

using namespace std;
main() {
   char s[] = "hello", t[] = "hello";
   if(s==t)
      cout<<"eqaul strings";
}

Q 8 - What is the size of int?

A - 2

B - 4

C - 8

D - Compiler dependent

Answer : D

Explaination

The size of int depends upon the complier i.e. whether it is a 16 bit or 32 bit.

Q 9 - The default executable generation on UNIX for a C++ program is ___

A - a.exe

B - a

C - a.out

D - out.a

Answer : C

Explaination

a.out is the default name of the executable generated on both the UNIX and Linux operating systems.

Q 10 - What is the output of the following program?

#include<iostream>

using namespace std;
main() {
   char s[] = "Fine";
	*s = 'N';
   
   cout<<s<<endl;
}

A - Fine

B - Nine

C - Compile error

D - Runtime error

Answer : B

Explaination

*s=N, changes the character at base address to N.

#include<iostream>

using namespace std;
main() {
   char s[] = "Fine";
	*s = 'N';
   
   cout<<s<<endl;
}
cpp_questions_answers.htm
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