Unfortunately the object oriented language that took hold was C++. Among much fitter contenders for object languages, notably Smalltalk, C++ had the unique advantage of being downward compatible with the C programmers were already familiar with. Unfortunately this advantage had the huge side effect of forcing C++ to accept all of C’s obfuscated macros, pointer arithmetic, and now redundant structs. The baggage imposed on C++ by the need to be compatible with C went a long way toward wiping out the advantage of object oriented programming.
Java is the latest and possibly the greatest third generation programming language. Here I need to explain why Java is a better OOP language than C++.