#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
#define ElemType int
 typedef struct student
 {ElemType num;
 char name[20];
 char sex[10];
 char addr[20];
 struct student*next;
 }Student;
 void outlin(student*h);
 void  creat();
 void insert(Student*h);
 void delet(Student*h,int x);
 Student*p,*q,*s,*head;
 void creat()
{
ElemType x1;
 Student*ptr;
 head=(Student*)malloc(sizeof(Student));
 p=head;
 head->next=NULL;

 char  x2,x3,x4;

 while(x1!='0')
 {
 printf("\n 学号，姓名，性别，地址");
 ptr=(Student*)malloc(sizeof(Student));
 char x2,x3,x4;int x1;
 ptr->num=x1;
 ptr->name[20]=x2;
 ptr->sex[10]=x3;
 ptr->addr[20]=x4;
 p->next=ptr;
 ptr->next=NULL;
 p=ptr;

 scanf("%d,%s,%s,%s\n",&x1,&x2,&x3,&x4);
 }
 printf("\n 学号，姓名，性别，地址=%d,%s,%s,%s",x1,x2,x3,x4);
 }
 void outlin(Student *h)
 {
 p=h->next;
 printf("\n  ");
 while(p!=NULL)
{
 printf("num=%10dname=%20ssex=%10saddr=%20s",p->num,p->name,p->sex,p->addr);
 p=p->next;
 }
 printf("输出结果\n\n");
}
void insert(Student*h)
{
printf("num=？\n");
int x;
scanf ("%d",&x);
printf("num=%d\n",x);
s=(struct student*)malloc(sizeof(struct student));
char y2,y3,y4;
int y1;
s->num=y1;
s->name[20]=y2;
s->sex[10]=y3;
s->addr[20]=y4;
q=h;
p=h->next;
while(p!=NULL&&p->num!=x)
{
q=p;
p=p->next;
}
q->next=s;
s->next=p;
}
void delet(Student*h, ElemType x1)
{
 Student *q;
p=h;
while(p->next==NULL&&p->next->num!=x1)
p++;
if(p->next==NULL)
printf("\n x 不存在 !");
else{q=p->next;
     p->next=q->next;
     free(q);
}
 }
int main()
 {int i,x,y,cord;
 do{printf("\n  主菜单  \n");
    printf("  1  建立线性表  \n");
    printf("  2  插入一个元素 \n");
    printf("  3  删除一个元素  \n");
    printf("  4  结束程序运行  \n");
    printf("----------------------\n");
    printf(" 请输入您的选择(1,2,3,4)");
    scanf("%d",&cord);
 switch(cord)
 {
 case 1:{creat();outlin(head);}break;
 case 2:{printf("\n x4,y1,y2,y3,y4=?注意用逗号分隔");
 char y1, y2,y3,y4,x4;
 scanf("%s,%d,%s,%s,%s",&x4,&y1,&y2,&y3,&y4);
 insert(head);
 outlin(head);}break;
 case 3:{printf("\nx=?");
 scanf("%d",&x);
 delet(head,x);
 outlin(head);}break;
 case 4:exit(0);
 default:printf("输入数据有误");
 }
 }while(cord<=4);
 }