C++ 图书管理系统源代码

fclose(sfp); return 0; }

int reader::reader_mod() //定义修改读者的函数 {

FILE *sfp; int i,num,s,n; page_title();

cout<<\☆修改读者☆\ if((sfp=fopen(\ {

cout<<\无法打开文件. \ }

for(i=0;i

fread(&stud[i],sizeof(stud[i]),1,sfp); }

fclose(sfp);

cout<>num;

for(i=0,s==-1;i

if(stud[i].num==num) {

cout<<\名字:\ cout<<\学号: \ cout<<\年级: \ cout<<\班级: \ cout<<\性别: \

cout<<\书名: \ cout<<\借书日期: \

cout<<\可借天数: \

cout<<\ cout<<\是否确定修改该读者(1为是,0为否): \ cin>>s; if(s==1) {

page_title();

cout<<\请重新输入读者的信息.<<<\ do {

cout<<\请输入一个新的学号（学号从1001开始，但必须不同于已存在的学号）：\

cin>>stud[i].num;

. . . . for(n=0;n

if(stud[i].num==stud[n].num&&n!=i) {

cout<<\该学号已存在.\ } }

}while(stud[i].num==stud[n].num); cout<<\名字: \ cin>>stud[i].name; cout<<\年级: \ cin>>stud[i].grade; cout<<\班级: \ cin>>stud[i].clas; cout<<\性别: \ cin>>stud[i].sex; cout<<\书名: \

cin>>stud[i].book_name; cout<<\借书日期: \ cin>>stud[i].date; cout<<\可借天数: \ cin>>stud[i].avai_days; }

else if(s==0) {

return 0; } } }

if(s==-1) {

cout<<\该读者不存在. \ }

if((sfp=fopen(\ {

cout<<\无法打开文件. \ }

for(i=0;i

fwrite(&stud[i],sizeof(stud[i]),1,sfp); }

fclose(sfp); return 0; }

. . . .int book::book_out() //定义借书函数 {

FILE *bfp,*sfp;

int id,i,s,l,num, avaiday; char dates[10]; page_title();

cout<<\☆借书☆\\n\ cout<<\请输入书号:\ cin>>id;

if((bfp=fopen(\ cout<<\无法打开文件.\\n\ for(i=0;i

fread(&books[i],sizeof(books[i]),1,bfp); }

fclose(bfp);

for(i=0;i

if(id==books[i].id&&books[i].id!=0) {

system(\ page_title();

cout<<\☆书的信息☆\\n\ cout<<\书名: \ cout<<\书号: \ cout<<\作者: \ cout<<\价格: \ cout<<\总存量: \ cout<<\现存量: \ cout<<\出版社: \

cout<<\出版时间: \ cout<<\读者: \ cout<<\读者学号: \

cout<<\ if((sfp=fopen(\ {

cout<<\无法打开文件. \ }

for(l=0;l

fread(&stud[l],sizeof(stud[l]),1,sfp); }

fclose(sfp);

cout<<\请输入你的学号:\\n\

. . . . A: cin>>num;

for(l=0;l

if(stud[l].getnum()==num) {

if(books[i].store!=0) {

cout<<\请输入可借的天数:\\n\ cin>>avaiday;

stud[l].setavaiday(avaiday); cout<<\请输入借书日期:\\n\ cin>>dates;

stud[l].setdate(dates);

if((bfp=fopen(\ {

cout<<\无法打开文件.\ }

for(s=0;s

fread(&books[s],sizeof(books[s]),1,bfp);fclose(bfp); if(books[s].id==books[i].id) {

books[s].store--;

books[s].borr_num=stud[l].getnum();

strcpy(books[s].borrower,stud[l].getname()); strcpy(stud[l].getbook_name(),books[s].name); cout<<\你已经借了这本书. \ sfp=fopen(\ for(l=0;l

fwrite(&stud[l],sizeof(stud[l]),1,sfp); }

fclose(sfp); } } } }

else if(stud[l].getnum()!= num) {

cout<<\对不起，该学号是错误的，请再输入一遍:\\n\ goto A; } }

bfp=fopen(\

. . . . for(s=0;s

fwrite(&books[s],sizeof(books),1,bfp); }

fclose(bfp); } } }

int book::book_in() //定义还书函数 {

page_title();

cout<<\☆还书☆\\n\ int i,num,id,n; char no[]={\ FILE *bfp,*sfp;

if((sfp=fopen(\ {

cout<<\无法打开文件. \ }

for(i=0;i

fread(&stud[i],sizeof(stud[i]),1,sfp); }

fclose(sfp);

cout<<\请输入你的学号:\ BEFOR: cin>>num;

for(i=0;i

if(stud[i].getnum()==num&&stud[i].getnum()!=0) {

system(\ page_title();

cout<<\☆读者信息☆\\n\ cout<<\名字:\ cout<<\学号: \ cout<<\年级: \ cout<<\班级: \ cout<<\性别: \

cout<<\书名: \ cout<<\借书日期: \ cout<<\可借天数: \

cout<<\ if((bfp=fopen(\ {

. . . .