学步园

#include<stdio.h>
#include<malloc.h>
#define VERTEX_MAX 20
#define NULL 0
#define LEN sizeof(struct edgeNode)
struct edgeNode
{
	int Vertex;                                   //顶点信息
	int weight;                                   //权值
	struct edgeNode *next;                        //指向下一个顶点坐标
};
struct ListGraph
{
	edgeNode* AdjList[VERTEX_MAX];                //指向每个顶点的指针
	int VextexNum;
	int EdgeNum;                                 //图的顶点的数量和边的数量
	int GraphType;                                //图的结构
};
void CreateGraph(ListGraph *G)
{
	int i,weight;
	int start,end;
	edgeNode *s;
     for(i=1;i<=G->VextexNum;i++)                     //将图中各顶点指针清空
	{
		G->AdjList[i]=NULL;
	 }		  
	for(i=1;i<=G->EdgeNum;i++)                         //输入各边的两个顶点
	{
		printf("第%d条边:",i);
		scanf("%d,%d,%d",&start,&end,&weight);
		                                            //输入边的信息，起点，终点，权
		s=(struct edgeNode *)malloc(LEN);
		s->next=G->AdjList[start];                 //插入到邻接表中
		s->Vertex=end;                             //保存终点编号
		s->weight=weight;                          //保存权值
		G->AdjList[start]=s;                       //邻接表对应顶点指向该点
		if(G->GraphType==0)                        //若是无向图则再插入到终点的边链中
		{
			s=(struct edgeNode *)malloc(LEN);
			s->next=G->AdjList[end];
			s->Vertex=start;
			s->weight=weight;
			G->AdjList[end]=s;
		}
	}
}
void OutList(ListGraph *G)
{
	int i;
	edgeNode *s;
	for(i=1;i<=G->VextexNum;i++)
	{
		printf("顶点%d",i);
		s=G->AdjList[i];
		while(s)
		{
			printf("->%d(%d)",s->Vertex,s->weight);
			s=s->next;
		}
		printf("\n");
	}
}
void main()
{
	ListGraph G;
	printf("输入生成图的类型(0，有向图1，无向图):");
	scanf("%d",&G.GraphType);                           //由用户选择图的种类
	printf("输入图的顶点数量和边数量:");
	scanf("%d,%d",&G.VextexNum,&G.EdgeNum);
	                                                   //输入图的顶点数和边数
	printf("输入构成各边的两个顶点及权值(用逗号隔开):\n");
	CreateGraph(&G);
	printf("输出图的邻接表:\n");
	OutList(&G);
}