基于C语言的图书管理系统设计与实现

#ifndef managetain_c_ #define managetain_c_ #include <stdio.h> #include <stdlib.h> #include <conio.h> #include <string.h> #include "library.h" ////////////////////////////////////////////////////////////////////////// //求取借书者证件号字符串对应的最大长整型数 long int maxnum(void) { int i; long int max_num; for (max_num=0,i=0;i<MAXBORROWERNUM-1;i++) { max_num *= 10; max_num += 9; } return (max_num); } //IF添加图书失败 int failed_addbook(void) { printf("\n\n\t【提示】：添加图书失败!\n\n\n"); system("pause"); return LIBRARY_ERROR; } //IF添加图书成功 int completed_addbook(void) { printf("\n\n\t【提示】：添加图书成功!\n\n\n"); system("pause"); return LIBRARY_OK; } //添加图书结点时对链表进行修改 void add_book_to_list(BookNode* new_book) { if (headbooklist) //当图书链表不为空时 { headbooklist->prev->next = new_book; new_book->prev = headbooklist->prev; headbooklist->prev = new_book; new_book->next = NULL; } else //当图书链表为空时 { headbooklist = new_book; headbooklist->prev = new_book; new_book->next = NULL; } ++ new_book->book.book_total; //图书总册数加一 ++ new_book->book.leaved_total; //图书剩余册数加一 } //添加图书 int add_book(void) { BookNode* new_book = alloc_booknode(); //分配新的结点 BookNode* cur_booknode = headbooklist; //指向当前结点 int flag; //flag作为输入字符时的表字符，为1表示输入正确，为0表示退出输入 char get_ch; system("cls"); fflush(stdin); printf("\n\t\t------《添加图书》------"); printf("\n\n\t#-------------------------------#\n"); printf("\n\t请输入图书名："); flag = inputstring(new_book->book.name,MAXSTRLEN,0); if (!flag) { return(failed_addbook()); } //gets(new_book->book.name); if ( find_booknode(new_book->book.name) ) //如果在原链表中查找到该图书 { cur_booknode = find_booknode(new_book->book.name); printf("\n\t【提示】：该图书已存在!"); disp_book(& (cur_booknode->book)); //输出该图书信息 printf("\n\t如果您确认是该图书，并同意添加，请输入“Y”或者“y”!\n"); printf("\t否则,请输入其他键退出!"); get_ch = getch(); if ('Y' == get_ch || 'y' == get_ch ) //当确认添加该图书时 { //查找该图书在链表中的位置 //while ( strcmp(new_book->book.name,cur_booknode->book.name)) //cur_booknode = cur_booknode->next; if (cur_booknode->book.book_total >= MAXBOOKNUM) //如果该图书储存本数已经达到规定限额 { free_booknode(new_book); printf("\n\t该图书库存量已达到规定限额(%d本),不能再添加!\n",MAXBOOKNUM); return(failed_addbook()); //添加失败 } else //如果本数没有达到规定限额 { ++ cur_booknode->book.book_total; //该图书总册数加一 ++ cur_booknode->book.leaved_total; //该图书剩余册数加一 free_booknode(new_book); //释放结点 return(completed_addbook()); //添加成功 } } free_booknode(new_book); //释放结点 return(failed_addbook()); //添加失败 } //如果该图书库中尚没有该图书信息 printf("\n\t请输入图书作者："); flag = inputstring(new_book->book.author,MAXSTRLEN,0); if (!flag) { return(failed_addbook()); } //gets(new_book->book.author); printf("\n\t您确认要添加该图书吗? (确定添加请输入'Y',否则请输入其他键!) "); get_ch = getch(); if ( 'Y' == get_ch || 'y' == get_ch ) //如果确认添加 { add_book_to_list(new_book); //添加图书时修改指针和信息 return(completed_addbook()); //添加成功 } free_booknode(new_book); //释放该图书结点 return(failed_addbook()); //添加失败 } //添加借书者失败 int failed_addborrower(void) { printf("\n\n\t【提示】：添加借书者失败!\n\n\n"); system("pause"); return LIBRARY_ERROR; } //添加借书者成功 int completed_addborrower(void) { printf("\n\n\t【提示】：添加借书者成功!\n\n\n"); system("pause"); return LIBRARY_OK; } //添加借书者结点时对链表进行修改 void add_borrower_to_list(BorrowerNode* new_borrower) { if (headborrowerlist) //当借书者链表不为空时 { headborrowerlist->prev->next = new_borrower; new_borrower->prev = headborrowerlist->prev; headborrowerlist ->prev = new_borrower; new_borrower->next = NULL; } else //当借书者链表为空时 { headborrowerlist = new_borrower; headborrowerlist->prev = new_borrower; new_borrower->next = NULL; } } //为借书者分配图书证件号码 //number[]用于接受转化后的字符串，borrower_total为转化前的长整型数据 //转化规则：将长整型数据borrower_total的每一位转变为相应的字符，若borrower_total不满8位 //则在转化后的字符串前面加零，直到满8位为止。字符串的最后一位（下标为【8】）赋值为‘\0’. void give_borrowernumber(char number[],long int borrower_total) { int count; long int div_count; //因为实际字符串长度为8位 long int num; for (count = 0,div_count =1;count < MAXBORROWERNUM - 2;count ++) { div_count *= 10; } for (count = 0;count < MAXBORROWERNUM-1;count ++) { num = borrower_total / div_count; if (! num) { number[count] = '0'; } else { number[count] = num + 48; } borrower_total=borrower_total % div_count; div_count = div_count / 10 ; } number[MAXBORROWERNUM-1] = '\0'; return; } //添加借书者 int add_borrower(void) { BorrowerNode* new_borrower = alloc_borrowernode(); //分配新的结点 //BorrowerNode* cur_borrower = headborrowerlist; int flag; //flag作为输入字符时的表字符，为1表示输入正确，为0表示退出输入 long int borrower_count; //long int borrower_num; char get_ch; //char name[MAXSTRLEN]; char current_number[MAXBORROWERNUM] = {'0','0','0','0','0','0','0','0','\0'}; char number[MAXBORROWERNUM]; system("cls"); fflush(stdin); printf("\n\t\t------《添加借书者》------"); printf("\n\n\t#-------------------------------#\n"); printf("\n\t请输入借书者姓名: "); flag = inputstring(new_borrower->borrower.name,MAXSTRLEN,0); if (!flag) { return(failed_addbook()); } printf("\n\t请输入该借书者性别(man / woman): "); flag = inputstring(new_borrower->borrower.sex,MAXBORROWERSEXLEN,0); while (strcmp(new_borrower->borrower.sex,"man") && strcmp(new_borrower->borrower.sex,"woman")) { printf("\n\t【提示】:您输入的性别格式有误!"); printf("\n\n\t请重新输入该借书者性别(man / woman): "); flag = inputstring(new_borrower->borrower.sex,MAXBORROWERSEXLEN,0); } if (!flag) { return(failed_addborrower()); } //gets(new_borrower->borrower.sex); printf("\n\t请输入借书者地址: "); flag = inputstring(new_borrower->borrower.address,MAXSTRLEN,1); if (!flag) { return(failed_addborrower()); } //gets(new_borrower->borrower.address); printf("\n\t请输入借书者联系方式: "); flag = inputstring(new_borrower->borrower.phone_number,MAXSTRLEN,1); if (!flag) { return(failed_addborrower()); } //gets(new_borrower->borrower.phone_number); printf("\n\n\t【提示】：您确认要添加该借书者?(确认添加请输入'Y'，否则请输入其他键!)"); get_ch = getch(); if ( 'Y' == get_ch || 'y' == get_ch ) //如果确认添加 { FILE *fp; int i,j,ten = 10; borrower_count = 0; if (count_borrowernode()==maxnum()) //maxnum（）代表借书者证件号对应的最大长整型数据 { printf("\n\n\t【警告】:借书者人数已经达到最上限，请您增大借书者容量!"); free_borrowernode(new_borrower); //释放该结点 return(failed_addborrower()); //添加失败 } fp=fopen(FILENAME_BORROWERNUMBER,"rb"); //以读二进制方式打开文件"borrowernumber.dat" if (!fp) { //假设文件不存在，则新建文件 fp=fopen(FILENAME_BORROWERNUMBER,"wb"); if (!fp) { system("cls"); printf("【警告】:打开文件失败，退出!\n"); exit(0); } //新建文件后，写数据0 fwrite(current_number,sizeof(current_number),1,fp); } fclose(fp); fp = fopen(FILENAME_BORROWERNUMBER,"rb"); i = sizeof(current_number); //将文件指针指向最后一个整型数据，并读取 fseek(fp,-i,2); fread(current_number,sizeof(current_number),1,fp); for (i = 0 ; i < MAXBORROWERNUM-1 ; i ++) { //将字符串转