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

#include <iostream>
#include <complex>
using namespace std;
int main() 
{
   complex<double> c1(4.0, 16.0), c2;
   c2 = pow(c1, 2.0);
   cout << c2;
   return 0;          
}

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