#include<stdio.h>
#include<stdlib.h>
#include "conio.h"
typedef struct student
{
    char sname[15];
    char ssex[20];
    long ntell;
    char sadress[20];
    struct student *pnext;
}stu;
stu *phead=NULL;
stu *input()
{     
     while(1)
     {
         char chose;
        stu *pnew,*p2=phead ; //当前节点
        pnew=(stu *)malloc(sizeof(stu));
        pnew->pnext=NULL;
        if(pnew==NULL)
        {
            printf("内存分配失败！\n");
            exit(1);
        }
        printf("请输入信息： 姓名 性别 电话 地址\n");
        scanf("%s %s %ld %s",pnew->sname,pnew->ssex,&pnew->ntell,pnew->sadress);
        p2->pnext=pnew;
        p2=p2->pnext;
        printf("输入成功，退出请按Y，按任意键继续输入\n");
       chose=getche();
         if(chose=='Y'||chose=='y')
          break;
     }
     return phead;
 }
void print(stu *pp)   
{
    pp=pp->pnext;
    while(pp!=NULL)
    {
        printf("姓名%s 性别%s 电话%ld 地址%s",pp->sname,pp->ssex,pp->ntell,pp->sadress);
        pp=pp->pnext;
    }
    printf("\n按任意键继续!");
    getche();
}
int main()
{    int a;
     phead=(stu *)malloc(sizeof(stu));
     phead->pnext=NULL;
   while(1)
    {
     printf("====================欢迎来到菠菜叶通讯录管理系统v1.0========================\n");
     printf("  ================功能选择=================\n");
        printf("\t\t1.电话信息录入\n");
        printf("\t\t2.电话信息查询\n");
        printf("\t\t3.电话信息删除\n");
        printf("\t\t4.电话信息修改\n");
        printf("\t\t0.退出系统\n");
        scanf("%d",&a);
        switch(a)
        {
        case 1 :input();//录入信息
            break;
        case 2: print(phead);//查询信息
            break;
        case 3:
            break;
        case 4:
            break;
        case 0:
            break;
        }
    }
return 0;
}