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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <windows.h>
#include <conio.h>
//建立结构体 
struct Student_n  //学生的自然信息 
{
 int iNumber;
 char cName[20];
 char sex[5];
 int old;
 char nation[10];
 Student_n* pNext;
};
//建立结构体
struct Student_p  //学生的选课信息 
{
 int iNumber;
 char cName[20];
 int scnumber;
 char scname[20];
 Student_p* pNext;
}; 
//建立结构体 
struct Student_s //学生的成绩 
{
 int iNumber;
 char cName[20];
 int scnumber;
 char scname[20];
 int sc;
 Student_s* pNext;
};
//建立空表头
Student_n* head_n()
{
 Student_n* pHead = (Student_n *)malloc(sizeof(Student_n));
 pHead->pNext = NULL;
 return pHead;
} 
int iCount_n;  //记节点的个数 
//建立链表
void create_n(Student_n* pHead)
{
 Student_n* temp = (Student_n *)malloc(sizeof(Student_n));  //建立可移动的表头
 Student_n* pNew;
 int i = 1;
 iCount_n = 0; 
 printf("开始输入学生基本信息!\n\n"); 
 while(1)
 {
  pNew = (Student_n *)malloc(sizeof(Student_n));
  pNew->pNext = NULL;
  printf("输入第%d个人的信息(输入0终止输入):\n", i);
  printf("学号:");
  scanf("%d", &pNew->iNumber);
  if(pNew->iNumber == 0)
  {
   break;
  }
  printf("姓名:");
  scanf("%s", pNew->cName);
  printf("性别:");
  scanf("%s", pNew->sex);
  printf("年龄:");
  scanf("%d", &pNew->old);
  printf("民族:");
  scanf("%s", pNew->nation);
  if(i == 1)
  {
   pHead->pNext = pNew;
   temp = pNew;
  }
  else
  {
   temp->pNext = pNew;
   temp = temp->pNext;
   temp->pNext = NULL;
  }
  iCount_n++;
  i++;
 }
 free(pNew);
} 
//添加基本信息
void insert_n(Student_n* pHead)
{
 int j = 1;
 int i = iCount_n;
 Student_n* ptemp;
 Student_n* p, *temp;  //可移动的添加链表 
 Student_n* head = (Student_n *)malloc(sizeof(Student_n));
 while(1)
 {
  temp = (Student_n *)malloc(sizeof(Student_n));
  temp->pNext = NULL;
  printf("添加第%d个人的信息:(输入0终止输入)\n", i + 1);
  printf("学号:");
  scanf("%d", &temp->iNumber);
   if(temp->iNumber == 0)
   {
    break;
   }
  printf("姓名:");
  scanf("%s", temp->cName);
  printf("性别:");
  scanf("%s", temp->sex);
  printf("年龄:");
  scanf("%d", &temp->old);
  printf("民族:");
  scanf("%s", temp->nation);
  if(j == 1)
  {
   head = temp;
   p = temp;
  }
  else
  {
   p->pNext = temp;
   p = p->pNext;
   p->pNext = NULL;
  }
  i++;
  iCount_n++;
 }
 free(temp);
 ptemp = pHead;
 while(ptemp->pNext != NULL)
 {
  ptemp = ptemp->pNext;
 }
 ptemp->pNext = head;
}
//删除基本信息
void Delete_n(Student_n* pHead)
{
 int n = 0;  //输入要删除人的学号
 Student_n* p, *temp;  //负责移动的指针 
 Student_n* goal;  //要删除的节点 
 printf("请输入要删除人的学号:");
  DeLeTe:
 scanf("%d", &n);
 p = pHead;
 temp = pHead;
 goal = pHead;
 while(n != goal->iNumber)
 {
  p = p->pNext;
  goal = goal->pNext;
  if(goal == NULL)
  {
   printf("无此人!请输入正确的学号...\n");
   goto DeLeTe;
  }
 } 
 if(goal->pNext == NULL)
 {
  while(temp->pNext != goal)
  {
   temp = temp->pNext;
  }
  temp->pNext = NULL;
  free(goal);
  iCount_n--;
 }
 else
 {
  p = p->pNext;
  while(temp->pNext != goal)
  {
   temp = temp->pNext;
  }
  temp->pNext = p;
  iCount_n--;
  free(goal);
 }
} 
//更改基本信息
void change_n(Student_n* pHead)
{
 int n = 0;  //学号
 char name[20];
 int old;
 Student_n* temp;  //负责移动 
 printf("请输入要更改人的学号:");
  change:
 scanf("%d", &n);
 temp = pHead;
 while(n != temp->iNumber)
 {
  temp = temp->pNext;
  if(temp == NULL)
  {
   printf("无此人!请输入正确的学号...\n");
   goto change;
  }
 }
 printf("1,更改姓名\n");
 printf("2,更改年龄\n");
  errorchange:
 scanf("%d", &n);
  if(n == 1)
  {
   printf("请输入新的姓名:");
   scanf("%s", name);
   strcpy(temp->cName, name);
  }
  else if(n == 2)
  {
   printf("请输入新的年龄:");
   scanf("%d", &old);
   temp->old = old;
  }
  else
  {
   printf("输入有误!请重新输入...\n");
   goto errorchange;
  }
} 
//存盘
void Fileoutput_n(Student_n* pHead)
{
 pHead = pHead->pNext;
 Student_n* head;  //临时指针负责移动
 head = pHead; 
 FILE* p = fopen("nature.dat", "wb");
 if(p == NULL)
 {
  printf("指针为空\n");
  exit(1);
 }
 while(head != NULL)
 {
  fwrite(head, sizeof(Student_n), 1, p);
  head = head->pNext;
 }
 fclose(p);
} 
//读盘
void Fileinput_n(Student_n* pHead_n)
{
 iCount_n = 0;
 int i = 1;
 Student_n* head;
 Student_n* temp = (Student_n *)malloc(sizeof(Student_n));
 Student_n pNew;
 head = pHead_n;
 FILE* p = fopen("nature.dat", "rb");
 if(p == NULL)
 {
  printf("文件为空!\n");
  exit(1);
 }
 while(fread(&pNew, sizeof(Student_n), 1, p) == 1)
 {
  temp = (Student_n *)malloc(sizeof(Student_n));
  *temp = pNew;
  head->pNext = temp;
  head = head->pNext;
  head->pNext = NULL;
  iCount_n++;
 }
 fclose(p);
} 
//遍历 
void traversal_n(Student_n* pHead)
{
 Student_n* temp;  //临时指针负责移动
 temp = pHead; 
 int i = 1;
 if(pHead->pNext == NULL)
 {
  printf("链表为空!\n");
  exit(1);
 }
 temp = temp->pNext;
 printf("输出%d个人的信息!\n", iCount_n);
 while(temp != NULL)
 {
  printf("输出第%d个人的信息:\n", i);
  printf("学号:%d\n", temp->iNumber);
  printf("姓名:%s\n", temp->cName);
  printf("性别:%s\n", temp->sex);
  printf("年龄:%d\n", temp->old);
  printf("民族:%s\n", temp->nation);
  temp = temp->pNext;
  i++;
 } 
}
int iCount_p;
//建立选课信息的空表头
Student_p* head_p() 
{
 Student_p* head = (Student_p *)malloc(sizeof(Student_p));
 head->pNext = NULL;
 return head;
}
//建立选课信息链表
void create_p(Student_p* pHead)
{
 int i = 1;
 iCount_p = 0;
 printf("开始输入学生选课信息\n");
 Student_p* head = pHead;
 Student_p* pNew;
 while(1)
 {
  pNew = (Student_p *)malloc(sizeof(Student_p));
  printf("第%d个人的选课信息(输入0终止输入):\n", i);
  printf("学号:");
  scanf("%d", &pNew->iNumber);
   if(pNew->iNumber == 0)
   {
    break;
   }
  printf("姓名:");
  scanf("%s", pNew->cName);
  printf("课程号:");
  scanf("%d", &pNew->scnumber);
  printf("课程名:");
  scanf("%s", pNew->scname);
  head->pNext = pNew;
  head = head->pNext;
  head->pNext = NULL;
  iCount_p++;
  i++;
 }
} 
//添加选课信息
void insert_p(Student_p* pHead)
{
 int j = 1;
 int i = iCount_p;
 Student_p* temp;  //负责在原链表上移动
 Student_p* p, *pNew;  //负责在新的联表上移动
 Student_p* head;
 printf("开始添加学生选课信息:\n");
 while(1)
 {
  pNew = (Student_p *)malloc(sizeof(Student_p));
  printf("添加第%d个人的信息(输入0终止输入):\n", i + 1);
  printf("学号:");
  scanf("%d", &pNew->iNumber);
  if(pNew->iNumber == 0)
  {
   break;
  }
  printf("姓名:");
  scanf("%s", pNew->cName);
  printf("课程号:");
  scanf("%d", &pNew->scnumber);
  printf("课程名:");
  scanf("%s", pNew->scname);
  if(j == 1)
  {
   head = pNew;
   p = pNew;
   head->pNext = NULL;
  }
  else
  {
   head->pNext = pNew;
   head = head->pNext;
   head->pNext = NULL;
  }
  j++;
  i++;
  iCount_p++;
 } 
 free(pNew);
 temp = pHead;
 while(temp->pNext != NULL)
 {
  temp = temp->pNext;
 }
 temp->pNext = p;
} 
//删除选课信息
void Delete_p(Student_p* pHead)
{
 Student_p* p, *temp, *goal;
 int n = 0;
  error123:
 printf("请输入要删除人的学号:");
 scanf("%d", &n);
 temp = pHead;
 p = pHead;
 goal = pHead;
 while(n != goal->iNumber)
 {
  p = p->pNext;
  goal = goal->pNext;
  if(goal == NULL)
  {
   printf("无此人!请输入正确的学号...\n");
   goto error123;
  }
 }
 if(goal->pNext == NULL)
 {
  while(temp->pNext != goal)
  {
   temp = temp->pNext;
  }
  temp->pNext = NULL;
  free(goal);
  iCount_p--;
 }
 else
 {
  p = p->pNext;
  while(temp->pNext != goal)
  {
   temp = temp->pNext;
  }
  temp->pNext = p;
  free(goal);
  iCount_p--;
 }
} 
//更改选课信息
void change_p(Student_p* pHead)
{
 char name[20];  //scname
 int number;  //scnumber
 int n = 0;
 Student_p* goal;
 goal = pHead;
  errorchangepick:
 printf("请输入更改人的学号:");
 scanf("%d", &n);
 while(n != goal->iNumber)
 {
  goal = goal->pNext;
  if(goal == NULL)
  {
   printf("无此人!请输入正确的学号...\n");
   goto errorchangepick;
  }
 }
 printf("1,更改选课信息\n");
 printf("2,更改课程号\n");
 printf("3,更改课程名\n");
  errorchange123:
 scanf("%d", &n);
  if(n == 1)
  {
   system("cls");
   printf("请输入新课程号:");
   scanf("%d", &goal->scnumber);
   printf<