#include <stdio.h>#include <string.h>#include <stdlib.h>#define SIZE (struct booklist *)malloc(sizeof(struct booklist))//建立已借阅图书信息结构体struct borrow{char borbook_num[10];char borbook_name[22];char return_time[15];char stu_num[15];char stu_name[15];struct borrow *next;};//建立预借图书信息结构体struct prebor_stu{char prebook_num[10];char prestu_num[15];struct prebor_stu *next;};//建立图书结构体struct booklist{char num[10];char name[22];char zuozhe[15];char leibie[10];char pub_time[10];char price[10];char condition[10];struct booklist *next;};struct booklist *create(void); /*创建图书信息链表*/struct borrow *borrow_creat(struct booklist *head); //创建已借阅图书信息链表int pre_creat(struct booklist *head); //学生登录系统预借图书并将信息存入文件prebor_stulist.txtstruct prebor_stu *prebor_creat(void); //创建预借阅图书信息链表void printf1_(struct booklist *); //输出单个基本图书的数据void store(struct booklist *head); /*保存链表中的图书信息到文件booklist.txt*/void printfb1_(struct borrow *); //输出单个借出图书的部分数据void printfb_(struct borrow *p); //输出单个借出图书的数据void printfp1_(struct prebor_stu *); //输出单个被预借出图书的部分数据void printfp_(struct prebor_stu *); //输出单个被预借出图书的数据void printf_(struct booklist *,struct borrow *,struct prebor_stu *); /*2---输出链表中的图书信息*/struct booklist *load(void); //5---从文件读入图书信息struct booklist *num_paixu(struct booklist *); //4---按编号排序struct booklist *price_paixu(struct booklist *); //3---按价格顺序排序int kcnum(struct booklist *head); //6---统计库存数void chaxun1_(struct booklist *,struct borrow *,struct prebor_stu *); //7---查询图书的编号图书的信息,并输出void chaxun2_(struct booklist *,struct prebor_stu *,struct borrow *);//7---按作者查询信息并输出void chaxun3_(struct booklist *,struct prebor_stu *,struct borrow *); //7---查询某类别图书信息并自动输出void chaxun4_(struct borrow *,prebor_stu *,struct booklist *); //7---按学号查询借阅信息struct booklist *shanchu(struct booklist *,struct borrow *,struct prebor_stu *); //9---删除数据struct borrow *shanchu2_(struct borrow *,struct borrow *); //删除一个 struct borrow 结构体的数据struct prebor_stu *shanchu3_(struct prebor_stu *,struct prebor_stu *); //删除一个 struct prebor_stu 结构体的数据void xiugai(struct booklist *,struct borrow *,struct prebor_stu *); //10---修改数据void borstore(struct borrow *borrow_head); //保存已借阅图书信息到文件borrowlist.txt//重新保存修改后的预借阅信息到文件 prebor_stulist.txt （全部覆盖）void prestore(struct prebor_stu *pre_head);struct borrow *borload(void); //从文件提取信息创建已借阅图书源信息链表struct booklist *charu(struct booklist *head,struct borrow *borrow_head); //8---将图书的数据到顺序排放的链表中.且插入后也是顺序排放的struct booklist *scanf1_(void); // 输入单个图书源数据void exchange(struct booklist *,struct booklist *) ;//交换两个结构体内的内容struct borrow *tianjia1_(struct borrow *borrow_head,struct booklist *p); //添加一个 struct borrow 结构体的数据int main(void){int n, n1, x , k = 0, flag, flag1, x1;char ch;struct booklist *head = NULL; //图书信息链表头指针struct borrow *borrow_head = NULL ; //已借阅图书信息链表头指针struct prebor_stu *pre_head = NULL ; //预借图书信息链表头指针flag1 = 0; x = x1 = 1;while(x){system("cls");printf("***************************************************************************\n");printf("* >>>>>>>>>>>>>欢迎使用君宁图书管理系统<<<<<<<<<<<<<<< *\n");printf("* 0---退出系统 5---从文件录入数据 *\n");printf("* 1---录入数据 6---统计库存数 *\n");printf("* 2---输出信息 10---修改数据 7---查询功能 *\n");printf("* 3---按价格排序 8---增加数据 *\n");printf("* 4---按编号排序 9---删除数据 *\n");printf("***************************************************************************\n");printf("请选择功能:");scanf("%d", &n);getchar();switch(n){case 0: //0---退出系统{x = 0;printf("*******谢谢使用君宁图书管理系统!******\n");printf("****** 欢迎下次使用! ******\n");break;}case 1: //1---录入数据{while(x1){system("cls");printf("*******欢迎使用君宁图书信息录入系统*******\n");printf("*** 0---放弃录入 ****\n");printf("** 1---录入图书源信息 **\n");printf("* 2---录入借出图书信息 *\n");printf("** 3---录入预借图书信息 **\n");printf("******** 祝您使用愉快 ********\n");printf("请选择功能:");scanf("%d", &n1);getchar();switch(n1){case 0:{x1 = 0;break;}case 1:{head = create( ); /*创建图书信息链表*/printf("是否将源图书信息保存到文件booklist.txt!...(Y/N) :");ch = getchar();if(ch == 'y' || ch == 'Y')store(head);getchar();break;}case 2:{if(head == NULL ){printf("请先录入图书源信息!\n");getchar();break;}else{borrow_head = borrow_creat(head); //创建已借阅图书信息链表printf("是否将源图书信息保存到文件borrowlist.txt!...(Y/N) :" );ch = getchar();if(ch == 'y' || ch == 'Y')borstore(borrow_head);getchar();break;}}case 3:{if(head == NULL ){printf("请先录入图书源信息!\n");getchar();break;}else{flag = pre_creat(head);if(flag == 1)printf("没有录入预借图书信息!\n\n");if(flag == 2)pre_head = prebor_creat(); //创建预借阅图书信息链表getchar();break;}}default :{printf("输入错误指示!\n\n");break;}}}}case 2: //2---输出信息{if(head == NULL ){printf("请先录入图书信息!\n");getchar();break;}else{printf_(head,borrow_head,pre_head);break;}}case 3: //3---按价格排序{if(head == NULL ){printf("请先录入图书信息!\n");getchar();break;}else{head = price_paixu(head);printf("是否将排序后的源图书信息保存到文件booklist.txt!...(Y/N) :");ch = getchar();if(ch == 'y' || ch == 'Y')store(head);getchar();break;}}case 4: //4---按编号排序{if(head == NULL ){printf("请先录入图书信息!\n");getchar();break;}else{head = num_paixu(head);printf("是否将排序后的源图书信息保存到文件booklist.txt!...(Y/N) :");ch = getchar();if(ch == 'y' || ch == 'Y')store(head);getchar();break;}}case 5: //11---从文件读取数据{head = load();if(head == NULL ){printf("请先录入图书信息!\n");getchar();break;}else{borrow_head = borload(); //从文件提取信息创建已借阅图书源信息链表pre_head = prebor_creat(); //创建预借阅图书信息链表getchar();break;}}case 6: //6---统计库存数{if(head == NULL ){printf("请先录入图书信息!\n");getchar();break;}else{k = kcnum(head);printf("总共有%3d本图书!\n\n", k);getchar();break;}}case 7: //7---查询信息{if(head == NULL ){printf("请先录入图书信息!\n");getchar();break;}else{while(x1){system("cls");printf("*******欢迎使用君宁图书信息查询系统*******\n");printf("****** 0---退出查询******\n");printf("***** 1---按编号*****\n");printf("**** 2---按作者****\n");printf("***** 3---按类别*****\n");printf("****** 4---按学号******\n");printf("******** 祝您使用愉快********\n");printf("******************\n");printf("********************\n");printf("请选择功能:");scanf("%d", &n1);getchar();switch(n1){case 0:{x1 = 0;break;}case 1:{chaxun1_(head,borrow_head,pre_head);getchar();break;}case 2:{chaxun2_(head,pre_head,borrow_head);getchar();break;}case 3:{chaxun3_(head,pre_head,borrow_head);getchar();break;}case 4:{chaxun4_(borrow_head,pre_head,head);getchar();break;}default :{printf("输入指示有误!\n\n");break;}}}}x1 = 1;break;}case 8:{if(head == NULL ){printf("请先录入图书信息!\n");getchar();break;}else{head = charu(head,borrow_head);printf("是否将源图书信息保存到文件booklist.txt!...(Y/N) :");ch = getchar();if(ch == 'y' || ch == 'Y')store(head);getchar();break;}}case 9: //9---删除数据{if(head == NULL ){printf("请先录入图书信息!\n");getchar();break;}else{head = shanchu(head,borrow_head,pre_head);borrow_head = borload();pre_head = prebor_creat();break;}}case 10: //10---修改数据{if(head == NULL ){printf("请先录入图书信息!\n");getchar();break;}else{xiugai(head,borrow_head,pre_head);borrow_head = borload();getchar();break;}}default :{printf("输入错误指示.请重新输入!");getchar();break;}}}return 0;}/*创建图书源信息信息链表*/struct booklist *create(void){struct booklist *head, *tail, *p;char num[10],name[22], zuozhe[15], leibie[10], pub_time[10], price[10],condition[10];head = tail = p = NULL;printf("当输入图书编号为0时结束信息输入\n");printf("请输入图书编号:");gets(num);while(strcmp(num,"0") != 0){p = SIZE;printf("请输入书名:");gets(name);printf("请输入作者:");gets(zuozhe);printf("请输入类别:");gets(leibie);printf("请输入出版时间:");gets(pub_time);printf("请输入价格:");gets(price);printf("请输入借阅情况:");gets(condition);printf("\n");strcpy(p -> num, num);strcpy(p -> name, name);strcpy(p -> zuozhe, zuozhe);strcpy(p -> leibie, leibie);strcpy(p -> pub_time, pub_time);strcpy(p -> price, price);strcpy(p -> condition, condition);p -> next = NULL;if(head == NULL)head = p;elsetail -> next = p;tail = p;printf("请输入图书编号:");gets(num);}printf("图书源信息已建立链条!\n");return head;}//创建已借阅图书源信息链表struct borrow *borrow_creat(struct booklist *head) {struct booklist *p;struct borrow *borrow_head , *p1, *tail;borrow_head = p1 = tail = NULL;for(p = head; p != NULL; p = p -> next){p1 = (struct borrow *)malloc(sizeof(struct borrow));if(strcmp(p -> condition,"借出") == 0){printf("创建借出信息:\n");strcpy(p1 -> borbook_num ,p -> num);strcpy(p1 -> borbook_name ,p -> name);getchar();printf("借阅编号为%s的图书的借阅信息:\n",p -> num);printf("请输入应归还时间:");gets(p1 -> return_time);printf("请输入学生学号:");gets(p1 -> stu_num);printf("请输入学生姓名:");gets(p1 -> stu_name);printf("\n");p1 -> next = NULL;if(borrow_head == NULL)borrow_head = p1;elsetail -> next = p1;tail = p1;}}printf("成功创建已借出信息链表!\n\n");getchar();return borrow_head;}//保存已借阅图书信息到文件 borrowlist.txtvoid borstore(struct borrow *borrow_head){FILE *fp;struct borrow *p;if((fp = fopen("borrowlist.txt","w")) == NULL){printf("File open error! \n");exit(0);}p = borrow_head;while(p != NULL){fprintf(fp,"%16s%26s%16s%16s%16s\n",p -> borbook_num, p -> borbook_name, p -> return_time,p -> stu_num, p -> stu_name);p = p -> next;}fclose(fp);printf("文件成功保存到 borrowlist.txt 中!\n");getchar();}//从文件提取信息创建已借阅图书源信息链表struct borrow *borload(void){struct borrow *p, *tail, *head;FILE *fp;head = p = tail = NULL;if((fp = fopen("borrowlist.txt","r")) == NULL){printf("文件 borrowlist.txt 打开失败!\n");getchar();exit(0);}while(!feof(fp)){p = (struct borrow *)malloc(sizeof(struct borrow));fscanf(fp,"%16s%26s%16s%16s%16s\n",p -> borbook_num, p -> borbook_name, p -> return_time,p -> stu_num, p -> stu_name);if(head == NULL)head = p;elsetail -> next = p;tail = p;}tail -> next = NULL;fclose(fp);printf("已成功从文件 borrowlist.txt 提取信息创建已借阅图书源信息!\n");return head;}//录入预借图书信息并将信息存入文件 prebor_stulist.txtint pre_creat(struct booklist *head){struct booklist *b;struct prebor_stu *p;char a[10], c[15];int n, x = 1, flag = 1;FILE *fp;b = head;p = (struct prebor_stu *)malloc(sizeof(struct prebor_stu));printf("进入预借图书!(按回车键继续、、、)\n");getchar();while(x){printf("请输入要预借阅的图书编号:");gets(a);while((strcmp(b -> num ,a) != 0) && b -> next != NULL){b = b -> next;}if(strcmp(b -> num ,a) != 0){printf("没有找到编号为%s的图书!\n", a);printf("输入--0 结束录入!(输入其他数字继续录入...)\n\n");printf("请选择功能:");scanf("%d", &n);getchar();if(n == 0){x = 0;}getchar();}else{printf("请输入学号:");gets(c);strcpy(p -> prebook_num, a);strcpy(p -> prestu_num, c);if((fp = fopen("prebor_stulist.txt","a+")) == NULL){printf("File open error! \n");exit(0);}fprintf(fp,"%16s%16s\n",p -> prebook_num, p -> prestu_num);fclose(fp);flag = 2;printf("输入--0 结束录入!(输入其他数字继续录入...)\n\n");printf("请选择功能:");scanf("%d", &n);getchar();if(n == 0){x = 0;getchar();}}}return flag;}//重新保存修改后的预借阅信息到文件 prebor_stulist.txt （全部覆盖）void prestore(struct prebor_stu *pre_head){struct prebor_stu *p;FILE *fp;p = pre_head;if((fp = fopen("prebor_stulist.txt","w")) == NULL){printf("File open error! \n");exit(0);}while(p != NULL){fprintf(fp,"%16s%16s\n",p -> prebook_num, p -> prestu_num); p = p -> next;}fclose(fp);printf("文件成功保存到 prebor_stulist.txt 中!\n");getchar();}//从文件 prebor_stulist.txt创建预借阅图书信息链表struct prebor_stu *prebor_creat(void){struct prebor_stu *p, *tail, *head;FILE *fp;head = p = tail = NULL;if((fp = fopen("prebor_stulist.txt","r")) == NULL){printf("文件 prebor_stulist.txt 打开失败!\n");getchar();}while(!feof(fp)){p = (struct prebor_stu *)malloc(sizeof(struct prebor_stu));fscanf(fp,"%16s%16s\n",p -> prebook_num, p -> prestu_num);if(head == NULL)head = p;elsetail -> next = p;tail = p;}tail -> next = NULL;fclose(fp);printf("已从文件 prebor_stulist.txt 成功读取并建立预借阅图书信息!\n");getchar();return head;}/*2---保存链表中的图书信息到文件booklist.txt*/void store(struct booklist *head){FILE *fp;struct booklist *p;if((fp = fopen("booklist.txt","w")) == NULL){printf("File open error! \n");exit(0);}p = head;while(p != NULL){fprintf(fp,"%16s%26s%16s%16s%16s%16s%16s\n",p -> num, p -> name, p -> zuozhe, p -> leibie,p -> pub_time, p -> price, p -> condition);p = p -> next;}fclose(fp);printf("文件成功保存到 booklist.txt 中!\n");getchar();}// 输入单个图书源数据struct booklist *scanf1_(void) {struct booklist *p;p = SIZE;printf("请输入图书编号:");gets(p -> num);printf("请输入书名:");gets(p -> name);printf("请输入作者:");gets(p -> zuozhe);printf("请输入类别:");gets(p -> leibie);printf("请输入出版时间:");gets(p -> pub_time);printf("请输入价格:");gets(p -> price);printf("请输入借阅情况:");gets(p -> condition);return p;}//输出单个图书的数据void printf1_(struct booklist *p) {printf("编号:");puts(p -> num);printf("书名:");puts(p -> name);printf("作者:");puts(p -> zuozhe);printf("类别:");puts(p -> leibie);printf("出版时间:");puts(p -> pub_time);printf("价格:");puts(p -> price);printf("借阅情况:");}//输出单个借出图书的部分数据void printfb1_(struct borrow *p) {printf("应归还时间:");puts(p -> return_time);printf("借阅学生学号:");puts(p -> stu_num);printf("借阅学生姓名:");puts(p -> stu_name);}//输出单个借出图书的数据void printfb_(struct borrow *p) {printf("图书编号:");puts(p -> borbook_num);printf("书名:");puts(p -> borbook_name);printf("应归还时间:");puts(p -> return_time);printf("借阅学生学号:");puts(p -> stu_num);printf("借阅学生姓名:");puts(p -> stu_name);}//输出单个被预借出图书的部分数据void printfp1_(struct prebor_stu *p) {printf("预借图书的学生学号:"); puts(p -> prestu_num);}//输出单个被预借出图书的数据void printfp_(struct prebor_stu *p) {printf("图书编号:");printf("预借阅图书的学生学号:");puts(p -> prestu_num);}/*3---输出链表中的图书信息*/void printf_(struct booklist *head, struct borrow *borrow_head,struct prebor_stu *pre_head){struct booklist *p;struct borrow *b;struct prebor_stu *pre;int x = 1, n;p = head; b = borrow_head; pre = pre_head;while(x == 1){system("cls");printf("*******欢迎使用君宁图书信息输出系统*******\n");printf("* 0---退出 *\n");printf("* 1---输出图书源信息 *\n");printf("* 2---输出借出图书信息 *\n");printf("* 3---输出预借借图书信息 *\n");printf("******** 祝您使用愉快 ********\n");printf("请选择功能:");scanf("%d", &n);getchar();switch(n){case 0:{x = 0;break;}case 1:{if(head != NULL){printf("图书源信息如下:\n");do{printf1_(p);printf("\n\n");p = p -> next;}while(p != NULL);}getchar();break;}case 2:{if(borrow_head == NULL){printf("没有借出图书信息(按回车键继续、、、)!\n");getchar();break;}else{printf("借出图书信息如下:\n");do{printfb_(b);printf("\n\n");b = b -> next;}while(b != NULL);}printf("按回车键继续、、\n");getchar();break;}case 3:{if(pre_head == NULL){printf("没有预借图书信息(按回车键继续、、、)!\n");getchar();getchar();break;}else{printf("预借借图书信息如下:\n");do{printfp_(pre);printf("\n\n");pre = pre -> next;}while(pre != NULL);}printf("按回车键继续、、\n");getchar();break;}default :{printf("输入错误(按回车键继续、、、)!\n");getchar();break;}}}}//11---从文件读入图书信息struct booklist *load(void){struct booklist *p, *tail, *head;FILE *fp;head = p = tail = NULL;if((fp = fopen("booklist.txt","r")) == NULL){printf("文件 booklist.txt 打开失败!\n");getchar();exit(0);}while(!feof(fp)){p = SIZE;fscanf(fp,"%16s%26s%16s%16s%16s%16s%16s\n",p -> num, p -> name, p -> zuozhe, p -> leibie,p -> pub_time, p -> price,p -> condition);if(head == NULL)head = p;elsetail -> next = p;tail = p;}tail -> next = NULL;fclose(fp);printf("已成功读取文件 booklist.txt ,建立源图书信息链表!\n");return head;}//4---按编号排序并输出struct booklist *num_paixu(struct booklist *head){struct booklist *p, *p1, *tail;p1 = NULL;tail = SIZE;for(p = head;p -> next != NULL; p = p -> next){for(p1 = p ->next; p1 != NULL; p1 = p1 ->next){if(strcmp(p -> num,p1 -> num) > 0){exchange(tail,p1);exchange(p1,p);exchange(p,tail);}}}printf("图书已按编号排序成功,具体信息如下:\n");for(p = head; p != NULL; p = p -> next){printf1_(p);printf("\n");}return head;}//3---按价格排序struct booklist *price_paixu(struct booklist *head) {struct booklist *p, *p1, *tail;p1 = NULL;tail = SIZE;for(p = head;p -> next != NULL; p = p -> next){for(p1 = p ->next; p1 != NULL; p1 = p1 ->next){if(strcmp(p -> price,p1 -> price) > 0){exchange(tail,p1);exchange(p1,p);exchange(p,tail);}}}printf("图书已按价格排序成功,具体信息如下:\n");for(p = head; p != NULL; p = p -> next){printf1_(p);printf("\n");}return head;}//6---统计库存数int kcnum(struct booklist *head){int i = 0;struct booklist *p;for(p = head;p != NULL; p = p -> next)i++;return i;}//7---按编号查询信息并输出void chaxun1_(struct booklist *head,struct borrow *borrow_head,struct prebor_stu *pre_head){char a[10];struct booklist *p;struct borrow *b;struct prebor_stu *p1;int x1, x2;p = head; x1 = x2 = 0;printf("请输入要查询的图书编号:");gets(a);while((strcmp(p -> num ,a) != 0) && p -> next != NULL){p = p -> next;}if(strcmp(p -> num ,a) != 0)printf("没有找到编号为%s的图书!\n", a);else{for(b = borrow_head;b != NULL; b = b -> next){if(strcmp(b -> borbook_num ,a) == 0){x1 = 1;printf("您要查询的书已借出,其具体信息如下:\n");printfb1_(b); //输出单个借出图书的数据printf1_(p);}}for(p1 = pre_head;p1 != NULL; p1 = p1 -> next){if(strcmp(p1 -> prebook_num ,a) == 0){ x2 = 1;printf("您要查询的书已预借,其具体信息如下:\n");printfp1_(p1); //输出单个被预借出图书的数据printf1_(p);}}if(x1 == 0 && x2 == 0){printf("此书未被预借!\n\n");printf("您要查询的图书信息如下:\n");printf1_(p);}}}//7---按作者查询信息void chaxun2_(struct booklist *head,struct prebor_stu *pre_head,struct borrow *borrow_head){char a[10];struct booklist *p;struct borrow *b;struct prebor_stu *pre;int flag = 1, x1 ;printf("请输入要查询的图书的作者:");gets(a);for(p = head;p != NULL; p = p -> next){if(strcmp(p -> zuozhe,a) == 0){if(flag == 1){printf("您查询的%s的所有图书信息如下:\n\n",a);flag = -1;}printf1_(p);for(b = borrow_head;b != NULL; b = b -> next){if(strcmp(b -> borbook_num ,p -> num) == 0){printfb1_(b);}}x1 = 0;for(pre = pre_head; pre != NULL; pre = pre -> next){if(strcmp(pre -> prebook_num, p -> num) == 0){printf("此书已被%s学号的学生预借!\n",pre -> prestu_num );x1 = 1;}}if(x1 == 0){printf("此书未被预借!\n");x1 = 1;}printf("\n\n");}}if(flag == 1)printf("没有找到您要查询的的图书信息!\n\n");}//7---查询某类别图书信息并自动输出void chaxun3_(struct booklist *head,struct prebor_stu *pre_head,struct borrow *borrow_head){char a[10];struct booklist *p;struct prebor_stu *pre;struct borrow *b;int flag = 1 , x1;printf("请输入要查询的图书的类别:");gets(a);for(p = head;p != NULL; p = p -> next){if(strcmp(p -> leibie,a) == 0){if(flag == 1){printf("您查询的%s的所有图书信息如下:\n\n",a);flag = -1;}printf1_(p);for(b = borrow_head;b != NULL; b = b -> next){if(strcmp(b -> borbook_num ,p -> num) == 0){printfb1_(b);}}x1 = 0;for(pre = pre_head; pre != NULL; pre = pre -> next){if(strcmp(pre -> prebook_num, p -> num) == 0){printf("此书已被%s学号的学生预借!\n",pre -> prestu_num );x1 = 1;}}if(x1 == 0){printf("此书未被预借!\n");x1 = 1;}printf("\n\n");}}if(flag == 1)printf("没有找到您要查询的的图书信息!\n\n");}//7---按学号查询图书借阅信息并自动输出void chaxun4_(struct borrow *borrow_head,struct prebor_stu *pre_head,struct booklist *head){//建立图书编号结构体struct book_num{char booknum[10];struct book_num *next;};struct prebor_stu *p ;struct borrow *b;struct booklist *p2;char a[15];int i, j;i = j = 0;struct book_num *bnumhead1, *bnumhead2, *tail, *p1;bnumhead1 = bnumhead2 = tail = p1 = NULL;printf("请输入学生学号:");gets(a);for(p = pre_head; p != NULL; p = p -> next){if(strcmp(p -> prestu_num,a) ==0){i++;p1 = (struct book_num *)malloc(sizeof(struct book_num)); strcpy( p1 -> booknum, p ->prebook_num);if(bnumhead1 == NULL)bnumhead1 = p1;elsetail -> next = p1;tail = p1;p1 -> next = NULL;}}for(b = borrow_head;b != NULL; b = b -> next){if(strcmp(b -> stu_num,a) ==0){j++;p1 = (struct book_num *)malloc(sizeof(struct book_num)); strcpy( p1 -> booknum, b ->borbook_num);if(bnumhead2 == NULL)bnumhead2 = p1;elsetail -> next = p1;tail = p1;p1 -> next = NULL;}}if(i == 0 && j == 0)printf("没有您要查询学生的借阅信息!");else{if( j != 0){printf("该生一共借了%d本书,其借阅书的信息如下:\n", j);for( p1 = bnumhead2; p1 != NULL; p1 = p1 -> next){for(p2 = head; p2 != NULL; p2 = p2 -> next){if(strcmp(p1 -> booknum, p2 -> num) == 0){printf1_(p2);if(strcmp(p2 -> condition,"借出") ==0){for(b = borrow_head;b != NULL; b = b -> next)if(strcmp(b -> borbook_num,p2 -> num) ==0)printfb1_(b);}printf("\n");}}}}if( i != 0){printf("该生一共预借借了%d本书,其借阅书的信息如下:\n", i);for( p1 = bnumhead1; p1 != NULL; p1 = p1 -> next){for(p2 = head; p2 != NULL; p2 = p2 -> next){if(strcmp(p1 -> booknum, p2 -> num) == 0){printf1_(p2);if(strcmp(p2 -> condition,"借出") ==0){for(b = borrow_head;b != NULL; b = b -> next)if(strcmp(b -> borbook_num,p2 -> num) ==0)printfb1_(b);}printf("\n");}}}}}}//9---删除数据struct booklist *shanchu(struct booklist *head,struct borrow *borrow_head,struct prebor_stu *pre_head){struct booklist *p1 , *p2;struct borrow *b;struct prebor_stu *p;char a[10];p1 = p2 = head;printf("请输入要删除的图书编号:");gets(a);while((strcmp(p1 -> num ,a) != 0) && p1 -> next != NULL) {p2 = p1;p1 = p1 -> next;}if(strcmp(p1 -> num ,a) != 0)printf("没有找到要删除的图书信息!\n");else if(p1 == head){head = p1 -> next;printf("删除成功!\n");store(head);for(b = borrow_head; b != NULL; b = b -> next){if(strcmp(b -> borbook_num,a) == 0)borrow_head = shanchu2_(borrow_head,b);}for(p = pre_head; p != NULL; p = p -> next){if(strcmp(p -> prebook_num,a) == 0)pre_head = shanchu3_(pre_head,p);}}else{p2 -> next = p1 -> next;printf("删除成功!\n");store(head);for(b = borrow_head; b != NULL; b = b -> next){if(strcmp(b -> borbook_num,a) == 0)borrow_head = shanchu2_(borrow_head,b);}for(p = pre_head; p != NULL; p = p -> next){if(strcmp(p -> prebook_num,a) == 0)pre_head = shanchu3_(pre_head,p);}}return head;}//删除一个 struct borrow 结构体的数据struct borrow *shanchu2_(struct borrow *borrow_head,struct borrow *p) {struct borrow *p1 , *p2;p1 = p2 = borrow_head;while(strcmp(p1 -> borbook_num ,p -> borbook_num) != 0) {p2 = p1;p1 = p1 -> next;}if(p1 == borrow_head){borrow_head = p1 -> next;borstore(borrow_head);}else{p2 -> next = p1 -> next;borstore(borrow_head);}getchar();return borrow_head;}//添加一个 struct borrow 结构体的数据。
