数据结构中的有向图的拓扑排序算法基础程序，可在此基础上进行更改，主要构造了无向图、有向图和逆邻接图，使用c语言编程。-Data structure topological sort algorithm of the directed graph based program that can be changed, on the basis of the main structure undirected graph and directed graph and inverse adjacency graph, using c language programming.