Flow-control structures: Difference between revisions

A classic aid to design and analysis is a flowchart diagram, and there exist systems which will read the source code of a programme and draw its flowchart (on a graph plotter, say) with the various pieces of code appearing in blocks linked by lines showing the flow. Considering all the above (and not forgetting the arithmetic-IF and IF ... THEN ... ELSE ... ENDIF statemments, DO-loops, DO WHILE loops and the SELECT and WHERE ... ELSEWHERE statements) , this is no simple challenge.