C语言实现图的邻接矩阵存储操作

#include<stdio.h>
#include<stdlib.h>
#define MAX_VER_NUM 50
typedef char VertexType;
typedef enum
{
 DG,UDG
}GraphType;
typedef struct
{
 VertexType vexs[MAX_VER_NUM]; //顶点向量
 int arcs[MAX_VER_NUM][MAX_VER_NUM]; //邻接矩阵
 int vexnum,arcnum;   //图的当前顶点数和弧数
 GraphType type;   //图的种类标志
}MGraph; 
 
//根据名称得到指定顶点在顶点集合中的下标
//vex 顶点
//return 如果找到，则返回下标，否则，返回0
int getIndexOfVexs(char vex,MGraph *MG)
{
 int i;
 for(i=1;i<=MG->vexnum;i++)
 {
 if(MG->vexs[i]==vex)
 {
 return i;
 }
 }
 return 0;
}
 
//创建邻接矩阵
void create_MG(MGraph *MG)
{
 int i,j,k;
 int v1,v2,type;
 char c1,c2;
 printf("Please input graph type DG(0) or UDG(1):");
 scanf("%d",&type);
 if(type==0)
 {
 MG->type=DG;
 }
 else if(type==1)
 {
 MG->type=UDG;
 }
 else
 {
 printf("Please input correct graph type DG(0) or UDG(1)!");
 return;
 }
 printf("Please input vexnum:");
 scanf("%d",&MG->vexnum);
 printf("Please input arcnum:");
 scanf("%d",&MG->arcnum);
 getchar();
 for(i=1;i<=MG->vexnum;i++)
 {
 printf("Please input %dth vex(char):",i);
 scanf("%c",&MG->vexs[i]);
 getchar();
 }
 //初始化邻接矩阵
 for(i=1;i<=MG->vexnum;i++)
 {
 for (j=1;j<=MG->vexnum;j++)
 {
 MG->arcs[i][j]=0;
 }
 }
 //输入边的信息，建立邻接矩阵
 for(k=1;k<=MG->arcnum;k++)
 {
 printf("Please input %dth arc v1(char) v2(char):",k);
 scanf("%c %c",&c1,&c2);
 v1=getIndexOfVexs(c1,MG);
 v2=getIndexOfVexs(c2,MG);
 if(MG->type==-1)
 {
 MG->arcs[v1][v2]=MG->arcs[v2][v1]=1;
 }
 else
 {
 MG->arcs[v1][v2]=1;
 }
 getchar();
 }
}
 
//打印邻接矩阵和顶点信息
void print_MG(MGraph MG)
{
 int i,j;
 if(MG.type==DG)
 {
 printf("Graph type: Direct graph\n");
 }
 else
 {
 printf("Graph type: Undirect graph\n");
 }
 printf("Graph vertex number: %d\n",MG.vexnum);
 printf("Graph arc number: %d\n",MG.arcnum);
 printf("Vertex set:");
 for(i=1;i<=MG.vexnum;i++)
 {
 printf("%c",MG.vexs[i]);
 }
 printf("\nAdjacency Matrix:\n");
 for(i=1;i<=MG.vexnum;i++)
 {
 for(j=1;j<=MG.vexnum;j++)
 {
 printf("%d",MG.arcs[i][j]);
 }
 printf("\n");
 }
}
 
//主函数
int main(void)
{
 MGraph MG;
 create_MG(&MG);
 print_MG(MG);
 return 0;
}