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

#include <iostream>
#include <string>
using namespace std;
 
class A
{
	mutable int a;
 
        public:
	int assign(int i) const {
		a = i;
	}
	int return_value() const {
		return a;
	}
 
};
 
int main(int argc, char const *argv[])
{
	A obj;
	obj.assign(5);
	cout<<obj.return_value();
}

What is a class in C++?

A. A collection of functions

B. A reserved keyword in C++

C. A blueprint for creating objects

D. A way to declare arrays of data

Which keyword is used to create an object of a class in C++?

A. new

B. create

C. object

D. None of the above

What is an object in C++?

A. A reserved keyword in C++

B. An instance of a class

C. A way to declare arrays of data

D. None of the above

What is the purpose of a constructor in C++?

A. To hide the implementation details of a class

B. To create multiple instances of a class

C. To initialize the object's data members

D. To destroy the object