The beauty of structured programming is that the rules are a simple addition to basic rules of flowcharting. As long as the rules are followed, translating any flowchart to computer code becomes much simpler and clearer to understand.

1. Everything starts with the basic Start -> Process -> End chart;
2. You may add any structure (sequence, branch, or loop) before or after any other structure.
3. Wherever you have a process box, you may substitute it with any type of proper structure.
4. Wherever you have a process box, you may add any structure directly before or after it.

examples:

Golden Rule of Structured Programming
Each Structure has only one flow in one flow out