//加盟会员管理系统
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct Member
{
   char num[100];//会员编号牌
   char name[15];//姓名
   char title[20];//会长，副会长，高级会员，普通会员
   char sex[20];//性别
   char age[20];//年龄
   char telephone[20];//电话
   struct Member *next;
};
typedef struct Member Node;
typedef struct Member *Link;

void Menu();//主函数及主界面
void Insert(Link head);//插入功能
void Delete(Link head);//删除功能
void Modify(Link head);//修改功能
void Query(Link head);//查询功能
void Save(Link head);//保存功能
void Load(Link head);//载入功能

void main ()//主函数
{
Node head;
void Menu(Link head);
}

void Menu(Link head)//菜单
{
   int choice;
   do{
       printf("1:Insert\n2:Delete\n3:Modify\n4:Query\n5:Save6\n:Load\n0:Exit\n");
       scanf("%d", &choice);
       switch(choice)
       {
       case 1:Insert(Link head);break;
       case 2:Delete(Link head);break;
       case 3:Modify(Link head);break;
       case 4:Query(Link head);break;
       case 5:Save(Link head);break;
       case 6:Load(Link head);break;
       case 0:break;
       }
   }while(choice!=0);
}

void Insert(Link head)//插入
{
   Node z;
   int choice=1;
   if(choice==1)
   {
   scanf("%s,%s,%s,%s,%s,%s",&z->num,&z->name,&z->title,&z->sex,&z->age,&z->telephone);
       z->next=head->next;
       head->next=*z;
       printf("1:Go on 0:Return menu\n");
       scanf("%d",&choice);
   }
   if(choice==0)
   {
       void Menu(Link head);
   }
}

void Delete(Link head)//删除
{
   char num[100];
   int judge=1;
   int choice=1
   Node p1=head->next;
   Node p2=head;
   if(choice=1)
   {
   printf("Please Enter Num\n");
   scanf("%s",&num);
   while(p != NULL)
       {
           p1=p1->next;
           p2=p2->next;
       if(num==p1->num)
           {
           if(p1->next != NULl)
               {
               p2->next=p1->nxet;
               free(p1);
           printf("Successfully delete\n");
               }
               if(p1->next==NULL)
               {
                   p2->next=NULL;
                   printf("Successfully delete\n");
               }
           judge=0;
           }
       }
   if(judge=1)
       printf("No information found\nFail to delete\n");
       printf("1:Go on 0:Return menu\n");
       scanf("%d",&choice);
   }
   if(choice=0)
       void Menu(Link head);
}

void Modify(Link head)//修改
{
char num[100],name[15],title[20],sex[20],age[20],telephone[20];
   int choice=1;
   int date;
   if(choice=1)
   {
   printf("Please enter the modified number\n");
   scanf("%s",num);
   while(p != NULL)
       {
       p=p->next;
       if(num==p->num)
       {
           printf("%s,%s,%s,%s,%s,%s\n",p->num,p->name,p->title,p->sex,p->age,p->telephone);
           judge=0;
           printf("Please enter the modified data\n");
           printf("1:num 2:name 3:tetle 4:sex 5:age 6:telephone 0:cancel the change\n");
           scanf("%d",&date);
           printf("Please information\n");
           switch(date)
           {
           case 1:scanf("%s",&num);p->num=num;break;
           case 2:scanf("%s",&name);p->name=name;break;
           case 3:scanf("%s",&title);p->title=title;break;
           case 4:scanf("%s",&sex);p->sex=sex;break;
           case 5:scanf("%s",&age);p->age=age;break;
           case 6:scanf("%s",&telephone);p->telephone=telephone;break;
           case 0:break;
           }
           }
       }
   if(judge=1)
           printf("No information found\n");
       printf("1:Go On 0:Return Menu\n");
       scanf("%d",&choice);
   }
   if(choice=0)
       void Menu(Link head);
}
void Query(Link head)//查询
{
   char num[100];
   int judge=1;
   int choice=1
   Node p=head;
   if(choice=1)
   {
   printf("Please Enter Num\n");
   scanf("%s",&num);
   while(p != NULL)
       {
           p=p->next;
       if(num==p->num)
           {
           printf("%s,%s,%s,%s,%s,%s\n",p->num,p->name,p->title,p->sex,p->age,p->telephone);
           judge=0;
           }
       }
   if(judge=1)
       printf("No information found\n");
       printf("1:Go On 0:Return Menu\n");
       scanf("%d",&choice);
   }
   if(choice=0)
       void Menu(Link head);
}

nat_pagle

利用“*”符号打印三角形，菱形的题目

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