5.1 - What is the third and last type of flow control?

A. Introduction

There are probably millions of programs in the world now, but all programs are made of three different "flows", or control structures: sequential, branching and looping.

Sequential execution goes from top to bottom, line by line.

Branching execution allows you to make decisions based on a condition:

You can even embed a branching structure in one branch:

Or, making one decision right after another:

B. So what's the third and last type of flow (control structure)?

C. Try to write some pseudo code to add all even numbers between 200 and 300.