C语言像一把雕刻刀，锋利，并且在技师手中非常有用。和任何锋利的工具一样，C会伤到那些不能掌握它的人。本文介绍C语言伤害粗心的人的方法，以及如何避免伤害。-C language is like a twist, sharp, and hand in the technician is very useful. And any sharp tools, C going to hurt those who cannot master it. In this paper, the C language damage a careless person method, and how to avoid damage.