Programming languages.Online version Overview of how programming languages works. by Marcelo Lanese 1 Group 1 2 Group 2 3 Group 3 4 Group 4 5 Group 5 6 Group 6 Program. Has to execute as a stream of bytes that are instructions in your computer's machine language. The source code. The human-created, editable version has to go through some kind of translation into machine code that the machine can actually run. Compiled Language. The most conventional kind of language get translated into runnable files of binary machine code by a special program called a compiler. FORTRAN Is another compiled language still used among engineers and scientists but years older and much more primitive THAN C. Interpreted Language. Depends on an interpreter program that reads the source code and translates it on the fly into computations and system calls. P-code. Are like compiled languages in that the source is translated to a compact binary form which is what you actually execute, but that form is not machine code, instead it's pseudocode.