- The main families of programming languages are:
- Algol-60, Algol-68, Basic, C, Cobol, Fortran, Pascal, Turing, ...
- Haskell, Miranda, SML (arguably), ...
- Prolog, ...
- Object Oriented
- C++, Java, ...
- It happens that most OO languages are imperative, and
object tends to imply state, but
there are functional OO languages such is OCAML
But things are rarely completely clean and simple, for example,
imperative Algol-68 is expression-based with functional features,
Prolog systems often have non-declarative "features", and
SML has assignable (:=, ref) variables.