用C语言写的阶乘算法，这个程序用一个很简单的算法来实现数的阶乘，程序虽然很短，也很简单，但各处都写有解释，有一定的基础知识就能理解，对学习C语言有一定的好处。-Written in C language with the factorial algorithm, this procedure with a very simple algorithm to achieve the number of factorial, procedures, although very short and ve