Procedural Language And Procedural Languages Essay
The programming style you 're probably used to, procedural languages execute a sequence of statements that lead to a result. In essence, a procedural language expresses the procedure to be followed to solve a problem. Procedural languages typically use many variables and have heavy use of loops and other elements of "state", which distinguishes them from functional programming languages. Functions in procedural languages may modify variables or have other side effects (e.g., printing out information) other than the value that the function returns.
Employing a programming style often contrasted with procedural programming, functional programs typically make little use of stored state, often eschewing loops in favor of recursive functions. The primary focus of functional programming is on the return values of functions, and side effects and other means storing state are strongly discouraged. For instance, in a pure functional language, if a function is called, it is expected that the function not modify any global variables or perform any output. It may, however, make recursive calls and change the parameters of those calls. Functional languages are often simpler syntactically and make it easier to work on abstract problems, but they can also be "further from the machine" in that their programming model makes it hard to understand exactly how the code is translated into machine language (which can be problematic for system programming).…