#includestdio.h #includestring.h #includeconio.h #includestdlib.h #includectype.h #define STACK_INIT_SIZE 10 #define OK 1 #define TRUE 1 #define FALSE 0 #define ERROR 0 struct student /*定义学生类型，用于存放借出的书籍*/ { int carnum; char lendbook[10]; }student[1000]; struct employ /*定义职工类型*/ { int employnum; char employname[15]; int employage; char employsex[2]; char employleve[10]; long int employtage; }employ[50]; struct book /*定义书的类型*/ { int booknum; char bookname[10]; char bookcreat[10]; int turefalse; /*用于借书和还书模块判断一本书是否借出的条件*/ }book[1000]; struct car /*借书卡的数据类型*/ { int carnum; char studentname[10]; int studentclass; }car[100]; huanbook() /*还书函数*/ { FILE *fp,*fp2; /*定义两个文件指针，fp2用于修改数据时设立临时文件用，防止数据遭破坏*/ int i,n; int carnum; char lendbook[10]; printf("请你输入你的卡号\n"); scanf("%d",carnum); fp=fopen("car.txt","r"); /*读取卡号记录*/ for(i=0;fread(car[i],sizeof(struct car),1,fp)!=0;i++) /*for循环判断卡号是否存在*/ { if(car[i].carnum==carnum) /*卡号存在，进入下一循环*/ { n=i; fclose(fp); printf("请输入你要还的书的名字\n"); scanf("%s",lendbook); fp=fopen("record.txt","r"); for(i=0;fread(student[i],sizeof(struct student),1,fp)!=0;i++) /*判断是否借阅了输入的书*/ { if(strcmp(student[i].lendbook,lendbook)==0) /*借阅了该书，进入下一循环，否则出错显示*/ { fclose(fp); fp=fopen("record.txt","r"); fp2=fopen("bookl.txt","w"); for(i=0;fread(student[i],sizeof(struct student),1,fp)!=0;i++) { if(strcmp(student[i].lendbook,lendbook)==0) { continue; /*删除还掉的书的借书记录*/ } fwrite(student[i],sizeof(struct student),1,fp2); /*写入原来没还的书的记录*/ } fclose(fp); fclose(fp2); fp=fopen("record.txt","w"); fp2=fopen("bookl.txt","r"); for(i=0;fread(student[i],sizeof(struct student),1,fp2)!=0;i++) { fwrite(student[i],sizeof(struct student),1,fp); /*将借书记录信息写回*/ } fclose(fp); fclose(fp2); fopen("bookl.txt","w"); /*清临时文件的记录*/ fclose(fp2); fp=fopen("book.txt","r"); fp2=fopen("bookl.txt","w"); for(i=0;fread(book[i],sizeof(struct book),1,fp)!=0;i++) /*将书的记录写入临时文件，防止因为修改信息破坏以前的记录*/ { if(i==n) { book[i].turefalse=1; fwrite(book[i],sizeof(struct book),1,fp2); /*将还的书的原来状态设为无人借阅的*/ continue; } fwrite(book[i],sizeof(struct book),1,fp2); } fclose(fp); fclose(fp2); fp=fopen("book.txt","w"); fp2=fopen("bookl.txt","r"); for(i=0;fread(book[i],sizeof(struct book),1,fp2)!=0;i++) { fwrite(book[i],sizeof(struct book),1,fp); /*将临时文件写回*/ } fclose(fp); fclose(fp2); fopen("bookl.txt","w"); /*清临时文件*/ fclose(fp2); printf("还书完毕，按任意键返回\n"); getch(); return 1; } } printf("你没有借这样的书，任意键返回\n"); /*出错提示*/ fclose(fp); getch(); return 0; } } printf("系统没这样的卡，和管理员联系,按任意键返回\n"); /*出错提示*/ fclose(fp); getch(); } findbook() { FILE *fp; char bookname[10]; int ture,i; fp=fopen("book.txt","r"); printf("请输入你要查找的书名\n"); scanf("%s",bookname); for(i=0;fread(book[i],sizeof(struct book),1,fp)!=0;i++) { if(strcmp(bookname,book[i].bookname)==0) { if(book[i].turefalse==1) { printf("这本书的详细资料是：%d %s %s 此书现在无人借阅\n按任意键返回\n",book[i].booknum,book[i].bookname,book[i].bookcreat); } else {printf("这本书已经有人借出\n");fclose(fp);return 0;} fclose(fp); return FALSE; } } printf("没有你要查询的书籍\n"); fclose(fp); return FALSE; } findbook1() { FILE *fp; char bookcreat[10]; int ture,i; fp=fopen("book.txt","r"); printf("请输入你要查找的作者名\n"); scanf("%s",bookcreat); for(i=0;fread(book[i],sizeof(struct book),1,fp)!=0;i++) { if(strcmp(bookcreat,book[i].bookcreat)==0) { if(book[i].turefalse==1) { printf("这本书的详细资料是：%d %s %s 此书现在无人借阅\n按任意键返回\n",book[i].booknum,book[i].bookname,book[i].bookcreat); } else {printf("这本书已经有人借出\n");fclose(fp);return 0;} fclose(fp); return FALSE; } } printf("没有你要查询的书籍\n"); fclose(fp); return FALSE; } lendcount() { FILE *fp; int i,n=0; fp=fopen("record.txt","r"); for(i=0;fread(student[i],sizeof(struct student),1,fp)!=0;i++) { printf("卡号：%d 借出的书籍：%s \n",student[i].carnum,student[i].lendbook); n=n+1; } fclose(fp); printf("目前共有%d本书借出\n",n); printf("按任意键\n"); getch(); return n; } chabook() { char ch5; do { printf("---------------欢迎进入图书查询系统！--------------\n"); printf(" 1：按书名查找\n"); printf(" 2：按作者查找\n"); printf(" 0：返回\n"); printf("请输入0--2,其他输入非法！\n"); scanf("%s",ch5); switch(ch5) { case '1':findbook();getch();break; case '2':findbook1();getch();break; case '0':break; default:printf("无此操作\n");getch();break; } }while(ch5!='0'); return FALSE; } lendbook() { FILE *fp,*fp2; int i,n; int carnum; printf("请你输入你的卡号\n"); scanf("%d",carnum); fp=fopen("car.txt","r"); for(i=0;fread(car[i],sizeof(struct car),1,fp)!=0;i++) { if(car[i].carnum==carnum) { n=i; fclose(fp); printf("请输入你要借阅的书的名字\n"); scanf("%s",student[n].lendbook); fp=fopen("book.txt","r"); for(i=0;fread(book[i],sizeof(struct book),1,fp)!=0;i++) { if(strcmp(book[i].bookname,student[n].lendbook)==0) { if(book[i].turefalse==0) {printf("对不起，此书有人借出，请借其他书\n");fclose(fp);getch();return;} else fclose(fp); fp=fopen("record.txt","a+"); student[n].carnum=carnum; fwrite(student[n],sizeof(struct student),1,fp); fclose(fp); fp=fopen("book.txt","r"); fp2=fopen("bookl.txt","w"); for(i=0;fread(book[i],sizeof(struct book),1,fp)!=0;i++) { if(strcmp(book[i].bookname,student[n].lendbook)==0) { book[i].turefalse=0; fwrite(book[i],sizeof(struct book),1,fp2); continue; } fwrite(book[i],sizeof(struct book),1,fp2); } fclose(fp); fclose(fp2); fp=fopen("book.txt","w"); fp2=fopen("bookl.txt","r"); for(i=0;fread(book[i],sizeof(struct book),1,fp2)!=0;i++) { fwrite(book[i],sizeof(struct book),1,fp); } fclose(fp); fclose(fp2); fopen("bookl.txt","w"); fclose(fp2); printf("借书完毕，按任意键返回\n"); getch(); return; } } printf("不存在这样的书，任意键返回\n"); fclose(fp); getch(); return; } } printf("你的卡号不存在，请申请新卡,按任意键返回\n"); fclose(fp); getch(); } carcount() { FILE *fp; int i,n=0; fp=fopen("car.txt","r"); for(i=0;fread(car[i],sizeof(struct car),1,fp)!=0;i++) { printf("第%d张卡卡号：%d 姓名：%s 班级：%d\n",i+1,car[i].carnum,car[i].studentname,car[i].studentclass); n=n+1; } fclose(fp); printf("目前共有%d本书\n",n); printf("按任意键\n"); getch(); } delcar() { FILE *fp,*fp2; int i; int carnum; char choice; fp=fopen("car.txt","r"); fp2=fopen("bookl.txt","w"); printf("请输入你要删除的卡号\n"); printf("如果你输入的卡号存在，系统自动删除该信息！如果不存在，系统不做任何改动\n"); scanf("%d",carnum); for(i=0;fread(car[i],sizeof(struct car),1,fp)!=0;i++) { if(car[i].carnum!=carnum) { fwrite(car[i],sizeof(struct car),1,fp2); } } fclose(fp); fclose(fp2); printf("是否真的要删除该卡？删除后该书籍的所有信息将无法恢复《Y/N》\n"); scanf("%s",choice); if(choice=='y'||choice=='Y') { fp=fopen("car.txt","w"); fp2=fopen("bookl.txt","r"); for(i=0;fread(car[i],sizeof(struct car),1,fp2)!=0;i++) { fwrite(car[i],sizeof(struct car),1,fp); } fclose(fp); fclose(fp2); fp2=fopen("bookl.txt","w"); fclose(fp2); printf("按任意键返回\n"); getch(); return; } else { printf("按任意键返回\n"); getch(); return; } } addcar() { FILE *fp; int i=0; fp=fopen("car.txt","a+"); printf("请你输入卡号\n"); scanf("%d",car[i].carnum); printf("请你输入学生姓名\n"); scanf("%s",car[i].studentname); printf("请你输入班级\n"); scanf("%d",car[i].studentclass); fwrite(car[i],sizeof(struct car),1,fp); fclose(fp); printf("输入完毕，任意键返回\n"); getch(); }
“专业、务实、高效、创新、把客户的事当成自己的事”是我们每一个人一直以来坚持追求的企业文化。 创新互联公司是您可以信赖的网站建设服务商、专业的互联网服务提供商! 专注于网站制作、网站设计、软件开发、设计服务业务。我们始终坚持以客户需求为导向，结合用户体验与视觉传达，提供有针对性的项目解决方案，提供专业性的建议，创新互联建站将不断地超越自我，追逐市场，引领市场！
首先这个问题涉及到三个对象和一个动作，即图书对象，学生对象和借书信息的对象，和完成“借书”的动作，图书对象又可以包含图书编号，书名，作者，出版社，出版日期等等，学生对象包含学生编号，姓名，性别，班级，系别等等。借书信息对象包含图书编号，学生编号，借书时间，借书数目等等
写好这三个类，然后分别new一个图书和学生的对象实例，
接着写一个借书动作过程的方法，将图书对象和学生对象的属性保存到借书信息的对象中....代码略
package Management;
import java.util.List;
import java.util.ArrayList;
public class Management {
public static ListBook bookList=null;
public Management() {
// TODO Auto-generated constructor stub
bookList=new ArrayListBook(100);
}
public void addbook(Book book)
{
bookList.add(book);
}
public Book[] findBook(String bookName)
{
Book [] book=new Book[100];
int j=0;
for(int i=0;ibookList.size();i++)
{
if(bookName.equals(bookList.get(i).getName()))
{
book[j]=bookList.get(i);
j++;
}
}
return book;
}
public Book[] ShowAllBook()
{
Book[]book=new Book[100];
for(int i=0;ibookList.size();i++)
{
book[i]=bookList.get(i);
bookList.get(i).printInfo();
}
return book;
}
}
class Book
{
private String name;
private String author;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
void printInfo()
{
System.out.println("书名为"+this.name+"作者为"+this.author);
}
}
class Reader
{
private String name;
public void borrowbook(Book book) {
Management liabry=new Management();
for(int i=0;iliabry.bookList.size();i++)
{ if(book.getAuthor().equals(liabry.bookList.get(i).getAuthor())book.getName().equals(liabry.bookList.get(i).getName()))
{
liabry.bookList.remove(i);
System.out.println("借书成功！");
break;
}
}
}
public void backbook(Book book) {
Management liabry=new Management();
liabry.addbook(book);
System.out.println("还书成功");
}
}
public class FooBarBaz {
public static void main(String[] args) {
int n=0;
int min=1;
int max=3;
for (int i = min; i = max; i++) {
for(int j=min;j=max;j++){
if(i+j=4){
for(int k=min;k=max;k++){
if(i+j+k=5){
System.out.println("方案"+(n++)+":"+"Person1:"+i+" Person2:"+j+" Person3:"+k);
}
}
}
}
}
}
switch(key){
case 1:
//借书
break;
case 2:
//还书
break;
}