Answer 1

Firstly I created a class (here, I created a class named Student)
Then I created two public data members or instance variable.
After that I created an object of Student class and named it s1 just for simplicity.
Then I am assigning values to the object, this step is called initialization
and finally I am printing values of s1 object.
https://code.sololearn.com/cSxO6FcEJVoM/?ref=app

You can learn about this topic from here:
https://www.javatpoint.com/cpp-object-and-class