程序代码：

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
#include<string.h>

#define MAX_VERTEX_NUM 20


typedef int VertexType;
typedef struct ArcNode
{
    int adjvex;
    struct ArcNode *nextarc;
}ArcNode;

typedef struct Vnode
{
    VertexType data;
    ArcNode *firstarc;
}VNode,AdjList[MAX_VERTEX_NUM];

int n;

typedef enum{FALSE=0,TURE=1} boolean;

boolean visited[MAX_VERTEX_NUM];

//以上是结构体的定义。


void creat(AdjList *g)
{
    ArcNode *p,*q;
    int m,s,d,i;
    printf("请输入定点和边数");
    scanf("%d,%d",&n,&m);
    for(i=1;i<=n;i++)
    {
        g[i].data=i;              //出问题的就是这里   提示 request for member 'data'in '*(g++(i*160))',which is of non_aggregate type vnode[20]
        g[i].firstarc=NULL;
    }
    
    for(i=1;i<=m;i++)
    {
        printf("第%d条边的起始顶点编号和终止顶点编号");
        scanf("%d,%d",&s,&d);
        while(s<1||s>n||d<1||d>n)
        {
            printf("error,aganin");
            scanf("%d,%d",&s,&d);
        }
        
        p=malloc(sizeof(ArcNode));
        p->adjvex=d;
        p->nextarc=NULL;
        if(!g[s].firstarc)
        {
            g[s].firstarc=p;
        }
        else
        {
            q=g[s].firstarc;
            while(q->nextarc)
            q=q->nextarc;
            q->nextarc=p;
        }
    }
}