Structured programming: It is a style of programming generally related with languages like FORTRAN, C, Pascal and so forth. Employing structured programming methods, a problem is frequently resolved employing a divide and conquer approach like stepwise refinement. An initially big problem is broken into numerous smaller sub-problems. Each of such is then progressively broken into even smaller sub-problems, till the level of complexity is considered to be manageable. At the lowest level, an answer is implemented in terms of data procedures and structures. This approach is frequently employed with imperative programming languages which are not object-oriented languages, that is the procedures and data structures are not implemented as classes.