Which of the following is correct way of concatenating two string objects in C++?

way 1:
string s1 = "hello";
string s2 = "world";
string s3 = s1 + s2;
 
way 2:
string s1 = "hello";
string s2 = "world";
string s3 = s1.append(s2);
 
way 3:
string s1 = "hello";
string s2 = "world";
string s3 = strcat(s1,s2);

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