So let's look at a little example, and this is going to, excuse me, both allow us introduce the syntax as well as what we want to have as the flow of control inside of here.

让我们看个小例子，这个程序会，对不对，请允许我,一边顺着控制流进行,一边讲解语法。

麻省理工公开课 - 计算机科学及编程导论课程节选