Bjarne Stroustrup
Bjarne Stroustrup
Pascal
b+b+b+c+c+c+c =3b+4c
c + c + 2c + c + c = 6c
b + b + b + c + c + c + c = 3b + 4c
4c
c + c + c + c + c = 5 * c.
There are no "primary and secondary keys" in c and c plus plus.
The back end for C++ is often C. In the early days of C++ compilers, implementors took advantage of the fact that C++ was an extension of C, and wrote C++ compilers that generated C as an intermediate file, passing it to a C compiler. Nowadays, most C++ compilers generate native object code in their own right, although there are still a few implementations that use the C++ to C paradigm.
3c
There is no such thing as 'unix C++'.
They do exist in C and C++.