This is similar in Ruby for thousands of lines of code is very hard to describe manually so the RDOC. C is somewhat a sister language of Ruby and true to this many of its built-in functions are in C. If you have ever used C, you know the true power of the language. But C was initially more adept for mathematical operations rather than today’s visually based programming languages. This is still the case but the built in functions in the language allows shorter coding with the input only of required conditions or functions to make it work. Visual programming languages like Visual Basic and Visual FoxPro all use a GUI which can be compared to a system previously using DOS then having to install windows with its savvy GUI.