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C語(yǔ)言鏈表實(shí)現(xiàn)圖書(shū)管理系統(tǒng)

更新時(shí)間：2018年01月18日 11:41:32 作者：威成天下

這篇文章主要為大家詳細(xì)介紹了C語(yǔ)言鏈表實(shí)現(xiàn)圖書(shū)管理系統(tǒng)，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

之前參照網(wǎng)上的資料用鏈表實(shí)現(xiàn)了圖書(shū)管理系統(tǒng)，包括簡(jiǎn)單的增刪改查功能以及借書(shū)還書(shū)功能，我是VC6.0下寫(xiě)的一個(gè)控制臺(tái)程序，格式參照的網(wǎng)上的。在動(dòng)手編碼之前，你需要理清自己的思路。首先，需要確定圖書(shū)館里系統(tǒng)中主要有那幾個(gè)對(duì)象，這里我寫(xiě)了學(xué)生對(duì)象和圖書(shū)對(duì)象。不妨在紙上寫(xiě)出或畫(huà)出它們主要包括哪些屬性以及其可能的對(duì)應(yīng)關(guān)系，這里根據(jù)不同人的要求會(huì)有所不同。清楚這些之后，就可以設(shè)計(jì)學(xué)生和圖書(shū)的數(shù)據(jù)結(jié)構(gòu)，比如這里我用的結(jié)構(gòu)體存儲(chǔ)其信息。然后就需要考慮，我想要哪些功能，除了基本的增刪改查之外，我還想要哪些功能？比如借書(shū)、還書(shū)，我怎么表示這之間的關(guān)系？可以通過(guò)圖書(shū)的屬性來(lái)記錄該書(shū)的狀態(tài)，及是否被借走，誰(shuí)借了。主要就是這個(gè)思路，圖書(shū)的增刪改查是通過(guò)鏈表實(shí)現(xiàn)的，當(dāng)然也可以用數(shù)組實(shí)現(xiàn)，只不過(guò)那會(huì)浪費(fèi)較多的空間。

// MyLibManSys.cpp : Defines the entry point for the console application. 

// 
 
#include "stdafx.h" 
#include "iostream" 
 
struct book{ 
  int id; 
  char title[20]; 
  char author[20]; 
  double price; 
  char state[20]; 
  int student_id; 
  char student_name[20]; 
  struct book* next; 
}; 
 
struct student{ 
  int id; 
  char name[20]; 
  char sex[10]; 
  char borrow_book[30]; 
  struct student* next; 
}; 
void Print_Book(struct book *head_book); 
void Print_Student(struct student *head_student); 
struct book *Create_New_Book();/*創(chuàng)建新的圖書(shū)庫(kù)*/  
struct student *Create_New_Student();/*創(chuàng)建新的學(xué)生庫(kù)*/ 
struct book *Insert_Book(struct book *head_book,struct book *new_book);/*增加圖書(shū)，逐個(gè)添加*/  
//void Insert_Book(struct book *head_book,struct book *new_book);/*增加圖書(shū)，逐個(gè)添加*/ 
//函數(shù)的參數(shù)是一個(gè)指針時(shí)，不要在函數(shù)體內(nèi)部改變指針?biāo)傅牡刂?，那樣毫無(wú)作用，需要修改的只能是指針?biāo)赶虻膬?nèi)容。即應(yīng)把指針當(dāng)作常量 
struct student *Insert_Student(struct student *head_student,struct student *new_student);/*增加學(xué)生，逐個(gè)添加*/  
struct book *Search_Book_ById(int id,struct book *head_book);  
struct book *Search_Book_ByTitle(char *title,struct book *head_book);  
struct book *Search_Book_ByPrice(double price_h,double price_l,struct book *head_book); 
//bool Delete_Book(int id,book* head_book); 
struct book* Delete_Book(int id,book* head_book); 
struct student *Search_Student(int id,struct student *head_student); 
struct student* Delete_Student(int id,student* head_student); 
 
void Lent_Book(int id,int student_id,struct book *head_book,struct student *head_student); 
void Back_Book(int id,int student_id,struct book *head_book,struct student *head_student); 
 
int main() 
{ 
  struct book* head_book,*p_book; 
  struct student* head_student, *p_student; 
  int choice, f, id, student_id; 
  int m = 1; 
  char name[20],sex[10]; 
  char title[20]; 
  double price_h,price_l,price; 
  char author[20]; 
  int size_book=sizeof(struct book); 
  int size_student=sizeof(struct student); 
  printf("\n歡迎您第一次進(jìn)入圖書(shū)管理系統(tǒng)!\n\n");  
  printf("----->[向?qū)----->[新建圖書(shū)庫(kù)]\n\n");  
  printf("注意:當(dāng)輸入圖書(shū)編號(hào)為0時(shí),進(jìn)入下一步.\n\n");  
  head_book=Create_New_Book();  
  system("cls"); 
  //Print_Book(head_book); 
  printf("\n歡迎您第一次進(jìn)入圖書(shū)管理系統(tǒng)!\n\n");  
  printf("----->[向?qū)----->[新建會(huì)員庫(kù)]\n\n");  
  printf("注意:當(dāng)輸入會(huì)員學(xué)號(hào)為0時(shí),進(jìn)入主菜單.\n\n"); 
  head_student=Create_New_Student();  
  system("cls"); 
  //Print_Student(head_student); 
  do{ 
    printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");  
    printf("\n");  
    printf("\t\t\t[1]:借書(shū)辦理\t");printf(" [6]:還書(shū)辦理\n");  
    printf("\n");  
    printf("\t\t\t[2]:查詢(xún)圖書(shū)\t");printf(" [7]:查詢(xún)學(xué)生\n");  
    printf("\t\t\t[3]:添加圖書(shū)\t");printf(" [8]:添加學(xué)生\n");  
    printf("\t\t\t[4]:刪除圖書(shū)\t");printf(" [9]:刪除學(xué)生\n");  
    printf("\t\t\t[5]:遍歷圖書(shū)\t");printf("[10]:遍歷學(xué)生\n\n");  
    printf("\t\t\t〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓〓\n\n");  
    printf("\t\t\t0:退出\n\n");  
    printf("請(qǐng)選擇<0~10>:");  
    scanf("%d",&choice); 
    switch(choice){ 
    case 0: 
      system("cls");  
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");  
      printf("\n謝謝您的使用!\n\n");  
      break; 
    case 1: 
      system("cls"); 
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n"); 
      printf("輸入借出圖書(shū)編號(hào):\n");  
      scanf("%d",&id); 
      printf("輸入借入學(xué)生學(xué)號(hào)：\n"); 
      scanf("%d",&student_id); 
      Lent_Book(id,student_id,head_book,head_student); 
      break; 
    case 2: 
      system("cls");  
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");  
      printf("1.按編號(hào)查詢(xún)\n\n");  
      printf("2.按名稱(chēng)查詢(xún)\n\n");  
      printf("3.按價(jià)格區(qū)間查詢(xún)\n\n");  
      printf("0.返回主菜單\n\n");  
      printf("請(qǐng)選擇:");  
      scanf("%d",&f);  
      if(f==1){  
        printf("請(qǐng)輸入查詢(xún)圖書(shū)編號(hào):");  
        scanf("%d",&id);  
        printf("相關(guān)信息如下:\n\n");  
        head_book=Search_Book_ById(id,head_book);  
        break;  
      }  
      else if(f==2){ 
        getchar(); 
        printf("請(qǐng)輸入查詢(xún)圖書(shū)名稱(chēng):");  
        gets(title); 
        printf("相關(guān)信息如下:\n\n");  
        head_book=Search_Book_ByTitle(title,head_book);  
        break;  
      }  
      else if(f==3){  
        printf("請(qǐng)輸入最高價(jià)格:");  
        scanf("%lf",&price_h);  
        printf("請(qǐng)輸入最低價(jià)格:");  
        scanf("%lf",&price_l);  
        printf("相關(guān)信息如下:\n\n");  
        head_book=Search_Book_ByPrice(price_h,price_l,head_book);  
        break;  
      }  
      else if(f==0){  
        break;  
      }  
      break; 
    case 3: 
      system("cls");  
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");  
      printf("請(qǐng)輸入圖書(shū)編號(hào):");  
      scanf("%d",&id);  
      printf("請(qǐng)輸入圖書(shū)名稱(chēng):");  
      scanf("%s",title);  
      printf("請(qǐng)輸入作者名字:");  
      scanf("%s",author);  
      printf("請(qǐng)輸入單價(jià):");  
      scanf("%lf",&price);  
      printf("\n"); 
      struct book *ptr_b; 
      for(ptr_b=head_book;ptr_b;ptr_b=ptr_b->next)  
      { 
        if(ptr_b->id==id)  
        {  
          printf("此編號(hào)圖書(shū)已存在\n");  
          m=0;  
          break;  
        }  
      }  
      if(m){  
        p_book=(struct book *)malloc(size_book);  
        strcpy(p_book->title,title);  
        p_book->id=id;  
        p_book->price=price;  
        p_book->student_id=-1;  
        strcpy(p_book->author,author);  
        strcpy(p_book->state,"存在");   
        strcpy(p_book->student_name,"待定");  
      // head_book=Insert_Book(head_book,p_book);  
        Insert_Book(head_book,p_book); 
        printf("\n添加圖書(shū)成功!\n\n");  
      }  
      break; 
    case 4: 
      system("cls");  
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");  
      printf("輸入刪除圖書(shū)編號(hào):\n");  
      scanf("%d",&id);  
      /*if(Delete_Book(id,head_book)){ 
        printf("\n刪除圖書(shū)成功!\n\n"); 
      }else{ 
        printf("刪除失敗"); 
      }*/ 
      head_book = Delete_Book(id,head_book); 
      break; 
    case 5:  
      system("cls");  
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");  
      Print_Book(head_book);  
      break; 
    case 6: 
      system("cls"); 
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n"); 
      printf("輸入歸還圖書(shū)編號(hào):\n");  
      scanf("%d",&id); 
      printf("輸入歸還學(xué)生學(xué)號(hào)：\n"); 
      scanf("%d",&student_id); 
      Back_Book(id,student_id,head_book,head_student); 
      break; 
    case 7: 
      system("cls");  
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");    
      printf("請(qǐng)輸入查詢(xún)學(xué)生學(xué)號(hào):");  
      scanf("%d",&id);  
      printf("相關(guān)信息如下:\n\n");  
      head_student=Search_Student(id,head_student);  
      break; 
    case 8: 
      system("cls");  
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");  
      printf("請(qǐng)輸入學(xué)生編號(hào):");  
      scanf("%d",&id);  
      printf("請(qǐng)輸入學(xué)生姓名:");  
      scanf("%s",name);  
      printf("請(qǐng)輸入學(xué)生性別:");  
      scanf("%s",sex);   
      printf("\n"); 
      struct student *ptr_s; 
      for(ptr_s=head_student;ptr_s;ptr_s=ptr_s->next)  
      { 
        if(ptr_s->id==id)  
        {  
          printf("此學(xué)號(hào)學(xué)生已存在\n");  
          m=0;  
          break;  
        }  
      }  
      if(m){  
        p_student=(struct student *)malloc(size_student);   
        p_student->id=id;   
        strcpy(p_student->name,name);  
        strcpy(p_student->sex,sex);   
        strcpy(p_student->borrow_book,"無(wú)");  
        head_student=Insert_Student(head_student,p_student);  
        printf("\n添加學(xué)生成功!\n\n");  
      }  
      break; 
    case 9: 
      system("cls");  
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");  
      printf("輸入刪除學(xué)生學(xué)號(hào):\n");  
      scanf("%d",&id);  
      head_student = Delete_Student(id,head_student); 
      break; 
    case 10: 
      system("cls");  
      printf("\n\t\t\t〓〓〓〓〓圖書(shū)管理系統(tǒng)〓〓〓〓〓\n\n");  
      Print_Student(head_student); 
    } 
  }while(choice!=0); 
  return 0; 
} 
 
struct book *Create_New_Book(){ 
  struct book *head_book,*p_book;  
  int id, tag;  
  double price;  
  char title[20],author[20];  
  int size_book=sizeof(struct book);  
    
  head_book=NULL;  
  printf("請(qǐng)輸入圖書(shū)編號(hào):");  
  scanf("%d",&id);  
  printf("請(qǐng)輸入圖書(shū)名稱(chēng):");  
  scanf("%s",title);  
  printf("請(qǐng)輸入作者名字:");  
  scanf("%s",author);  
  printf("請(qǐng)輸入單價(jià):");  
  scanf("%lf",&price);  
  printf("\n");  
  while(true){  
    p_book=(struct book *)malloc(size_book);  
    strcpy(p_book->title,title);  
    p_book->id=id;  
    p_book->price=price;  
    p_book->student_id=-1;  
    strcpy(p_book->author,author);  
    strcpy(p_book->state,"存在");   
    strcpy(p_book->student_name,"待定");  
    head_book=Insert_Book(head_book,p_book); 
    printf("是否繼續(xù)？繼續(xù)輸入1，退出按任意鍵\n"); 
    scanf("%d",&tag); 
    if(tag!=1){ 
      break; 
    } 
    printf("請(qǐng)輸入圖書(shū)編號(hào):");  
    scanf("%d",&id);  
    printf("請(qǐng)輸入圖書(shū)名稱(chēng):");  
    scanf("%s",title);  
    printf("請(qǐng)輸入作者名字:");  
    scanf("%s",author);  
    printf("請(qǐng)輸入單價(jià):");  
    scanf("%lf",&price);  
    printf("\n");  
  }  
  return head_book; 
} 
 
struct student *Create_New_Student(){ 
  struct student *head_student,*p_student;  
  int id, tag; 
  char sex[10]; 
  char name[20];  
  int size_student=sizeof(struct student);  
    
  head_student=NULL;  
  printf("請(qǐng)輸入學(xué)生編號(hào):");  
  scanf("%d",&id);  
  printf("請(qǐng)輸入學(xué)生姓名:");  
  scanf("%s",name);  
  printf("請(qǐng)輸入學(xué)生性別:");  
  scanf("%s",sex);   
  printf("\n");  
  while(true){  
    p_student=(struct student *)malloc(size_student);   
    p_student->id=id;   
    strcpy(p_student->name,name);  
    strcpy(p_student->sex,sex);   
    strcpy(p_student->borrow_book,"無(wú)");  
    head_student=Insert_Student(head_student,p_student);  
    printf("是否繼續(xù)？繼續(xù)輸入1，退出按任意鍵\n"); 
    scanf("%d",&tag); 
    if(tag!=1){ 
      break; 
    } 
    printf("請(qǐng)輸入學(xué)生編號(hào):");  
    scanf("%d",&id);  
    printf("請(qǐng)輸入學(xué)生姓名:");  
    scanf("%s",name);  
    printf("請(qǐng)輸入學(xué)生性別:");  
    scanf("%s",sex);   
    printf("\n");  
  }  
  return head_student; 
} 
 
struct book *Insert_Book(struct book *head_book,struct book *new_book){ 
  struct book *p,*q; 
 
  p=q=head_book; 
   
  if(head_book==NULL){  //單向鏈表為空的情況 
    head_book=new_book; 
    new_book->next = NULL; 
  }else{ 
    while((new_book->id>p->id)&&(p->next!=NULL)){ 
      q = p; 
      p = p->next; 
    } 
    if(new_book->id<=p->id){ 
      new_book->next=p; 
      if(head_book==p) 
        head_book=new_book; 
      else 
        q->next = new_book; 
    }else{ 
      p->next=new_book; 
      new_book->next=NULL; 
    } 
  } 
  return head_book; 
}; 
 
struct student *Insert_Student(struct student *head_student,struct student *new_student){ 
  struct student *p,*q; 
 
  p=q=head_student; 
   
  if(head_student==NULL){ //單向鏈表為空的情況 
    head_student=new_student; 
    new_student->next = NULL; 
  }else{ 
    while((new_student->id>p->id)&&(p->next!=NULL)){ 
      q = p; 
      p = p->next; 
    } 
    if(new_student->id<=p->id){ 
      new_student->next=p; 
      if(head_student==p) 
        head_student=new_student; 
      else 
        q->next = new_student; 
    }else{ 
      p->next=new_student; 
      new_student->next=NULL; 
    } 
  } 
  return head_student; 
} 
 
struct book *Search_Book_ById(int id,struct book *head_book){ 
  struct book *ptr_book = head_book;  
  int flag=0;  
  while(ptr_book!=NULL)  
  { 
    if(ptr_book->id==id){ 
      printf("圖書(shū)編號(hào):%d\n",ptr_book->id); 
      printf("圖書(shū)名稱(chēng):%s\n",ptr_book->title); 
      printf("圖書(shū)單價(jià):%.2lf\n",ptr_book->price); 
      printf("圖書(shū)作者:%s\n",ptr_book->author); 
      printf("存在狀態(tài):%s\n",ptr_book->state); 
      printf("借書(shū)人姓名:%s\n",ptr_book->student_name);  
      printf("學(xué)號(hào):%d\n",ptr_book->student_id); 
      printf("\n"); 
      flag++; 
    } 
    if(flag>0) 
    { 
      break; 
    } 
    ptr_book = ptr_book->next; 
  }  
  if(flag==0){  
      printf("暫無(wú)此圖書(shū)信息!\n\n");  
  }  
  return head_book;  
}; 
 
struct book *Search_Book_ByTitle(char *title,struct book *head_book){ 
  struct book *ptr_book = head_book;  
  int flag=0;  
  while(ptr_book!=NULL)  
  {  
    if(strcmp(ptr_book->title,title)==0){  
      printf("圖書(shū)編號(hào):%d\n",ptr_book->id);  
      printf("圖書(shū)名稱(chēng):%s\n",ptr_book->title);  
      printf("圖書(shū)單價(jià):%.2lf\n",ptr_book->price);  
      printf("圖書(shū)作者:%s\n",ptr_book->author);  
      printf("存在狀態(tài):%s\n",ptr_book->state);  
      printf("借書(shū)人姓名:%s\n",ptr_book->student_name);   
      printf("學(xué)號(hào):%d\n",ptr_book->student_id);  
      printf("\n");  
      flag++;  
    } 
    if(flag>0) 
    { 
      break; 
    } 
    ptr_book = ptr_book->next; 
  }  
  if(flag==0){  
      printf("暫無(wú)此圖書(shū)信息!\n\n");  
  }  
  return head_book; 
}; 
 
struct book *Search_Book_ByPrice(double price_h,double price_l,struct book *head_book){ 
  struct book *ptr_book = head_book;  
  int flag=0;  
  while(ptr_book!=NULL)  
  {  
    if(ptr_book->price>=price_l&&ptr_book->price<=price_h){  
      printf("圖書(shū)編號(hào):%d\n",ptr_book->id);  
      printf("圖書(shū)名稱(chēng):%s\n",ptr_book->title);  
      printf("圖書(shū)單價(jià):%.2lf\n",ptr_book->price);  
      printf("圖書(shū)作者:%s\n",ptr_book->author);  
      printf("存在狀態(tài):%s\n",ptr_book->state);  
      printf("借書(shū)人姓名:%s\n",ptr_book->student_name);   
      printf("學(xué)號(hào):%d\n",ptr_book->student_id);  
      printf("\n");  
      flag++;  
    } 
    ptr_book = ptr_book->next; 
  }  
  if(flag==0){  
      printf("暫無(wú)此圖書(shū)信息!\n\n");  
  }  
  return head_book; 
} 
 
/*bool Delete_Book(int id,book* head_book){ 
  bool flag=true; 
  struct book *p,*q; 
  p=q=head_book; 
  if(p->id==id&&p->next==NULL){ 
    head_book=NULL; 
  } 
 
  while(p->id!=id&&p->next!=NULL){ 
    q=p; 
    p=p->next; 
  } 
  if(p->id==id){ 
    if(p==head_book){ 
      head_book=p->next; 
    }else{ 
      q->next=p->next; 
    } 
    free(p); 
  }else{ 
    flag=false; 
    printf("找不到該書(shū)"); 
  } 
  return flag; 
};*/ 
 
struct book* Delete_Book(int id,book* head_book){ 
  bool flag=true; 
  struct book *p,*q; 
  p=q=head_book; 
 
  while(p->id!=id&&p->next!=NULL){ 
    q=p; 
    p=p->next; 
  } 
  if(p->id==id){ 
    if(p==head_book){ 
      head_book=p->next; 
    }else{ 
      q->next=p->next; 
    } 
 
    free(p); 
    printf("刪除成功！\n"); 
  }else{ 
    flag=false; 
    printf("找不到該書(shū)"); 
  } 
  return head_book; 
}; 
 
struct student* Delete_Student(int id,student* head_student){ 
  bool flag=true; 
  struct student *p,*q; 
  p=q=head_student; 
 
  while(p->id!=id&&p->next!=NULL){ 
    q=p; 
    p=p->next; 
  } 
  if(p->id==id){ 
    if(p==head_student){ 
      head_student=p->next; 
    }else{ 
      q->next=p->next; 
    } 
 
    free(p); 
    printf("刪除成功！\n"); 
  }else{ 
    flag=false; 
    printf("找不到該學(xué)生"); 
  } 
  return head_student; 
}; 
 
struct student *Search_Student(int id,struct student *head_student){ 
  struct student *ptr_student = head_student;  
  int flag=0;  
  while(ptr_student!=NULL)  
  { 
    if(ptr_student->id==id){ 
      printf("學(xué)號(hào):%d\n",ptr_student->id); 
      printf("姓名:%s\n",ptr_student->name); 
      printf("性別:%s\n",ptr_student->sex); 
      printf("借書(shū):%s\n",ptr_student->borrow_book);  
      printf("\n"); 
      flag++; 
    } 
    if(flag>0) 
    { 
      break; 
    } 
    ptr_student = ptr_student->next; 
  }  
  if(flag==0){  
      printf("暫無(wú)此學(xué)生信息!\n\n");  
  }  
  return head_student;  
}; 
 
void Lent_Book(int id,int student_id,struct book *head_book,struct student *head_student){ 
  struct book* p=head_book; 
  struct student* q=head_student; 
  if(p==NULL||q==NULL){ 
    printf("書(shū)本或?qū)W生不存在\n"); 
    return; 
  } 
  while(p!=NULL&&q!=NULL){ 
    if(p->id!=id){ 
      p=p->next; 
    } 
    if(q->id!=student_id){ 
      q=q->next; 
    } 
    if(p->id==id&&q->id==student_id){ 
      break; 
    } 
  } 
  if(p==NULL||q==NULL){ 
    printf("書(shū)本或?qū)W生不存在\n"); 
    return; 
  }else{ 
    if(strcmp(p->state,"存在")!=0){ 
      printf("書(shū)已借出!抱歉!"); 
      return; 
    }else{ 
      p->student_id=student_id; 
      strcpy(p->student_name,q->name); 
      strcpy(q->borrow_book,p->title); 
      strcpy(p->state,"已借出"); 
      printf("已成功借出!/n"); 
    } 
  } 
}; 
 
void Back_Book(int id,int student_id,struct book *head_book,struct student *head_student){ 
  struct book* p=head_book; 
  struct student* q=head_student; 
  if(p==NULL||q==NULL){ 
    printf("書(shū)本或?qū)W生不存在\n"); 
    return; 
  } 
  while(p!=NULL&&q!=NULL){ 
    if(p->id!=id){ 
      p=p->next; 
    } 
    if(q->id!=student_id){ 
      q=q->next; 
    } 
    if(p->id==id&&q->id==student_id){ 
      break; 
    } 
  } 
  if(p==NULL||q==NULL){ 
    printf("書(shū)本或?qū)W生不存在\n"); 
    return; 
  }else{ 
    if(strcmp(p->state,"存在")==0){ 
      printf("書(shū)未借出!抱歉!"); 
      return; 
    }else{ 
      p->student_id=-1; 
      strcpy(p->student_name,"待定"); 
      strcpy(q->borrow_book,"無(wú)"); 
      strcpy(p->state,"存在"); 
      printf("已成功歸還!/n"); 
    } 
  } 
}; 
 
void Print_Book(struct book *head_book){ 
  struct book* p=head_book; 
 
  if(p==NULL){  
    printf("\n無(wú)記錄\n\n");  
    return;  
  }  
  printf("\n圖書(shū)編號(hào)\t圖書(shū)名稱(chēng)\t圖書(shū)單價(jià)\t圖書(shū)作者\(yùn)n\n");  
  while (p!=NULL) 
  { 
    printf("%d\t\t%s\t\t%.2lf\t\t%s\n\n",p->id,p->title,p->price,p->author); 
    p = p->next; 
  } 
} 
 
void Print_Student(struct student *head_student){ 
  struct student* p=head_student; 
 
  if(p==NULL){  
    printf("\n無(wú)記錄\n\n");  
    return;  
  }  
  printf("\n學(xué)生姓名\t學(xué)生性別\t學(xué)生學(xué)號(hào)\n\n");  
  while (p!=NULL) 
  { 
    printf("%s\t\t%s\t\t%d\n",p->name,p->sex,p->id); 
    p = p->next; 
  } 
}

代碼可以直接運(yùn)行，這里我都是在控制臺(tái)上直接顯示的，如果想從文件讀取和向文件寫(xiě)入學(xué)生和圖書(shū)信息，只需要把相應(yīng)的printf和scanf部分改為文件操作。這個(gè)是很久之前寫(xiě)的，詳細(xì)的函數(shù)以及功能講解這里就不介紹了。歡迎大家討論和指導(dǎo)。

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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