Why is there a class keyword in C++?

Question

This question came to my mind when I learned C++ with a background of C. Even if there was a struct why did Stroustrup felt it was necessary to introduce the <

Answer 1

As David says, structs are public by default, classes are private by default. The larger point is that adding object orientation to C was a big change, and giving developers ways to express themselves accurately is an important part of designing a language.

As it turns out, the distinction between struct and class is quite minor from a technical point (default-public vs default-private), but in programmers' minds, the distinction is quite large. Adding the keyword was an important way to emphasize the OO nature of C++.