All software must be architected and layered to manage complexity - the fundamental name of the game. Imperative programming (from Latin imperare = command) is the oldest programming paradigm. In Functional Programming, Functions are first class candidates. Con’s: anyone can get started.

I shall begin with about a couple of remarks about the question itself. Therefore, the source code for imperative languages is a series of commands, which specify what the computer has to do – and when – in order to achieve a desired result. First of all, if we assume that “imperative programming” is an actual concept, then the question would be like asking “what are the disadvantages of numbers”. The imperative programming paradigm (command-based paradigm) is the older of the two basic paradigms. What is Functional Programming? A program based on this paradigm is made up of a clearly-defined sequence of instructions to a computer.. Unlike in declarative programming, in this case, the developer specifies in the source code precisely what the computer should do, step by step, to achieve the result.The focus is on the “how” of the solution path. In simple words, Functional Programming (FP) is one of the popular Programming paradigms, which does computation like Mathematical Functions without Changing State and Mutating Data. We write programs by defining a set of Functions and Immutable Data. Pro’s: anyone can get started.