But if a road trip out into the country interests you, then here is an idea.

VOA: special.2009.09.21

So it turns out in C, you can absolutely represent the idea of a condition, a branch, a fork in the road.

结果在C语言中，你们完全可以表示出环境的概念,一个分支，一个三岔路口。

哈佛公开课 - 计算机科学课程节选