occ is an open source and free, command line based Objective-C compiler. Objective-C is a reflective, object-oriented programming language which adds Smalltalk-style messaging to the C programming language.How to install and run: Unarchive, open a Terminal window, go into the occ folder and run the following commands from the command line:make./occ -dl -dp < test_codes/input.m
Requirements: · Apple Xcode