图的一系列算法（待续）

#include
using namespace std;

#define INFINITY INT_MAX
#define MAX_VERTEX_NUM 20
typedef enum {DG, DN, UDG, UDN} GraphKind;

//邻接矩阵
typedef struct ArcCell
{
	int key;    //对于无权图，用1或0表示相邻否，对带权图，则为权值类型
} ArcCell, AdjMatrix[MAX_VERTEX_NUM][MAX_VERTEX_NUM];   //这种定义数组的方式一定要记住

typedef struct {
   int vexs[MAX_VERTEX_NUM];
   AdjMatrix arcs;
   int vexnum,arcnum; //图的当前定点数和弧边数
   GraphKind kind;
}MGraph;

//邻接表
typedef struct ArcNode
{
     int adjvex;
	 struct ArcNode *nextarc;
}ArcNode;

typedef struct VNode
{
	int key;
	ArcNode *firstarc;
}VNode,AdjList[MAX_VERTEX_NUM];

typedef struct {
	AdjList vertices;
	int vexnum,arcnum;
	GraphKind kind;
} ALGraph;

void CreateUD(MGraph &G)      //用邻接矩阵无向图
{  
   int i,j;
   cout<<"Input vexnum:"<>G.vexnum;
   cout<<"Input arcnum:"<>G.arcnum;
   for(  i=0; i>v1>>v2;
	  G.arcs[v1][v2].key=1;
	  G.arcs[v2][v1].key = G.arcs[v1][v2].key;  //有向图和无向图的区别
   }
   cout<<"Graph:"<>G.vexnum;
   cout<<"Input arcnum:"<>G.arcnum;
   for( i=0; i>v1>>v2;
	  if( v1==v2 )
	  {
		  --k;
		  cout<<"two index are same, renew input:"<adjvex=v2;
	  node->nextarc=NULL;
      if(G.vertices[v1].firstarc==NULL)
	  {
         G.vertices[v1].firstarc=node;
	  }
	  else
	  {   
		  ArcNode *next=G.vertices[v1].firstarc;
		  while(next->nextarc)
		  {
			  next=next->nextarc;
		  }
		  next->nextarc=node;
	  }
	  
   }
   for( int j=0; jadjvex<<" ";
		   next=next->nextarc;
	   }
	   cout<