现有一个景区，景区里面有若干个景点。现欲开发景区信息管理系统，对景点的信息进行管理。使用图的数据结构来保存景区景点信息，为用户提供创建图、查询景点信息、旅游景点导航、搜索最短路径、铺设电路规划等功能。
　　使用C++语言，通过对景区信息管理系统的四次迭代开发，实现以下主要学习目标：
1)掌握图的定义和图的存储结构，图的创建方法及其应用
2)掌握图的两种遍历方法及其应用
3)掌握迪杰特斯拉（Dijkstra）算法及其应用
4)理解最小生成树的概念、掌握普里姆（Prim）算法及应用(There is a scenic spot and there are several scenic spots in it. Now we want to develop the information management system of scenic spots and manage the information of scenic spots. The data structure of the map is used to preserve the scenic spots information, providing the users with the functions of creating maps, inquiring the information of the scenic spots, the navigation of the tourist attractions, the shortest path searching, the layout of the layout of the circuit and so on.
Using C++ language, the following four main learning objectives are achieved through the development of the scenic area information management system.
1) master the definition and storage structure of graph, create method and application of graph.
2) the two traversing methods of mastering the graph and its application
3) Master Diedje Tesla (Dijkstra) algorithm and its application.
4) understand the concept of minimum spanning tree, master Prim algorithm and application.)