这个图书管理系统需要用到数据结构查询的方式去做
#include<bits/stdc++.h>
using namespace std;
const int BMAX = 50; //书最多个数
/*
* @author 芳芳
* @goal 图书管理系统
* @requires
* 1.能够输入输出图书的书名，书号，类型，作者等相关内容。
* 2.能够对书目进行增添，删除，修改图书信息的操作。
* 3.能够实现对图书的借出归还的管理，包括记录图书借出归还
* 的日期，借书人姓名等。*/
//图书管理模块
//图书类
class book{
public:
int no; //图书编号
char name[20]; //图书名称
char author[10]; //作者
int price; //价格
int b_flag; //1为在架，2为借出
int b_del; //1为存在, 2为删除
public:
book(){} //构造函数
void setno(int n){
no = n; //图书编号取值
}
int getno(){
return no; //返回图书编号值
}
void setprice(int p){
price = p; //图书价格取值
}
int getprice(){
return price; //返回图书价格值
}
void setname(char na[]){
strcpy(name, na); //字符串复制
}
char* getname(){
return name; //返回图书名称
}
void setauthor(char a[]){
strcpy(author, a); //字符串复制
}
char* getauthor(){
return author; //返回图书作者
}
void borbook(){
b_flag = 2; //借书标志
}
void delbook(){
b_del = 2; //删除标志
}
void addbook(int no, char na[], char author[], int price){
setno(no);
setname(na);
setauthor(author);
setprice(price);
b_flag = 1;
b_del = 1;
}
};
//图书数据库类
class bdatabase{
public:
book btarray[BMAX]; //图书集合
int top;
public:
bdatabase(){
book b;
top = -1;
fstream file("book.txt", ios::in); //打开文件
while (1){
file.read((char *)&b, sizeof(b));
if (!file) break;
top++;
btarray[top] = b;
}
file.close(); //关闭文件
}
~bdatabase(){
fstream file("book.txt", ios::out);
for (int i = 0; i <= top; i++){
if (btarray[i].b_del == 1)
file.write((char *)&btarray[i], sizeof(btarray[i]));
}
file.close();
}
void addbooks(){
book bk;
int no;
char bname[20];
char bau[10];
int pr;
cout << endl << "请输入书号: ";
cin >> no;
cout << endl << "请输入书名: ";
cin >> bname;
cout << endl << "请输入作者: ";
cin >> bau;
cout << endl << "请输入价格: ";
cin >> pr;
cout << endl;
bk.b_flag = 1;
bk.addbook(no, bname, bau, pr);
top++;
btarray[top] = bk;
return;
}
int findbooks(int suffix){ //查找图书，这个函数用于借书这书操作，suffix是数组下标
int no;
cout << "请输入书号: ";
cin >> no;
for (int i = 0; i <= top; i++){
if (btarray[i].no == no && btarray[i].b_del == 1){
return i;
}
}
return -1;
}
int findbooks(){ //查找图书,这个函数用于图书维护
int no;
char value[6];
cout << "请输入书号: ";
cin >> no;
for (int i = 0; i <= top; i++){
if (btarray[i].no == no && btarray[i].b_del == 1){
if (btarray[i].b_flag == 1)
strcpy(value, "在架");
if (btarray[i].b_flag == 2)
strcpy(value, "借出");
cout << "书号: " << btarray[i].no << " 书名: " << btarray[i].name << " 作者: " << btarray[i].author << " 价格: " << btarray[i].price << " 图书状态 :" << value << endl;
return i;
}
}
return -1;
}
void editbooks(){ //编辑图书
int cur;
cur = findbooks();
if (cur == -1){
cout << "没有这本书" << endl;
return;
}
cout << "书号: " << btarray[cur].no << " 书名: " << btarray[cur].name << " 作者: " << btarray[cur].author << " 价格: " << btarray[cur].price << endl;
cout << "请修改数据：" << endl;
cout << endl << "书的名称: ";
cin >> btarray[cur].name;
return;
}
void delbooks(){ //删除图书
int cur;
cur = findbooks();
if (cur == -1){
return;
}
if (btarray[cur].b_flag == 2){ //删除时判断图书是否借出
cout << "该图书已经借出，请在归还后再删除。" << endl;
return;
}
btarray[cur].b_del = 2;
return;
}
void listbooks(){ //显示全部图书
char value[6];
for (int i = 0; i <= top; i++){
if (btarray[i].b_del == 1){
if (btarray[i].b_flag == 1)
strcpy(value, "在架");
if (btarray[i].b_flag == 2)
strcpy(value, "借出");
cout << "书号: " << btarray[i].no << " 书的名称: " << btarray[i].name << " 图书状态 :" << value << endl;
}
}
return;
}
}
;
//读者管理模块
//读者类
class reader{
public:
int no;
int sex; //读者性别，1表示男，0表示女
char name[20];
int r_del; //1存在，2删除
int r_bor; //1借过书，2没有借书
book brbook;
public:
void addreader(int id, char na[], int s){//增加读者
no = id;
sex = s;
strcpy(name, na);
r_del = 1;
}
void setbrbook(book bt){ //设置借书标记
brbook = bt;
}
book getbrbook(){
return brbook; //返回借书信息
}
};
//读者数据库类
class rdatabase{
public:
reader rdarray[BMAX];
int top;
public:
rdatabase(){
reader rd;
top = -1;
fstream file("reader.txt", ios::in); //打开文件
while (1){
file.read((char *)&rd, sizeof(rd));
if (!file) break;
top++;
rdarray[top] = rd;
}
file.close(); //关闭文件
}
~rdatabase(){//析构函数
fstream file("reader.txt", ios::out);
for (int i = 0; i <= top; i++){
if (rdarray[i].r_del == 1)
file.write((char *)&rdarray[i], sizeof(rdarray[i]));
}
file.close();
}
void addreaders(){
reader rd;
int no;
int rs;
char rname[20];
cout << "请输入学号: ";
cin >> no;
cout << endl << "请输入姓名: ";
cin >> rname;
cout << endl << "请输入性别（1为男，0为女）：";
cin >> rs;
cout << endl;
rd.addreader(no, rname, rs);
rd.r_bor = 2;
top++;
rdarray[top] = rd;
return;
}
int findreaders(int suffix){ //查找读者，这个函数用于借书还书操作。 参数suffix是数组下标
int no;
cout << "请输入学号: ";
cin >> no;
for (int i = 0; i <= top; i++){
if (rdarray[i].no == no && rdarray[i].r_del == 1){
return i;
}
}
return -1;
}
int findreaders(){ //查找读者，这个函数用于读者维护操作
int no;
char value[3];
cout << "请输入学号: ";
cin >> no;
for (int i = 0; i <= top; i++){
if (rdarray[i].no == no && rdarray[i].r_del == 1){
if (rdarray[i].r_bor == 1)
strcpy(value, "借");
if (rdarray[i].r_bor == 2)
strcpy(value, "无");
cout << "学号: " << rdarray[i].no << " 姓名: " << rdarray[i].name << " 是否借书: " << value << endl;
return i;
}
}
return -1;
}
void editreaders(){ //编辑读者信息
int cur;
cur = findreaders();
if (cur == -1){
cout << "没有该学生" << endl;
return;
}
cout << "请修改数据：" << endl;
cout << endl << " 姓名: ";
cin >> rdarray[cur].name;
return;
}
void delreaders(){ //删除读者，读者如果借书要还书后才能删除
int cur;
cur = findreaders();
if (cur == -1){
return;
}
if (rdarray[cur].r_bor == 1){
cout << "该用户借了图书，请还书后再删除" << endl;
return;
}
rdarray[cur].r_del = 2;
return;
}
void listreaders(){ //显示所有读者
char value[3];
for (int i = 0; i <= top; i++){
if (rdarray[i].r_del == 1){
if (rdarray[i].r_bor == 1)
strcpy(value, "借");
if (rdarray[i].r_bor == 2)
strcpy(value, "无");
cout << "学号: " << rdarray[i].no << " 姓名: " << rdarray[i].name << " 是否借书: " << value << endl;
}
}
return;
}
}
;
void book_interface(){ //图书维护子菜单
cout << "****************************" << endl;
cout << "* 图书维护 *" << endl;
cout << "* (1)增 加 *" << endl;
cout << "* (2)更 改 *" << endl;
cout << "* (3)删 除 *" << endl;
cout << "* (4)查 找 *" << endl;
cout << "* (5)显 示 *" << endl;
cout << "* (6)返回上一层 *" << endl;
cout << "****************************" << endl;
cout << "请输入对应的数字:";
}
void read_interface() //读者维护子菜单
{
cout << "****************************" << endl;
cout << "* 读者维护 *" << endl;
cout << "* (1)增 加 *" << endl;
cout << "* (2)更 改 *" << endl;
cout << "* (3)删 除 *" << endl;
cout << "* (4)查 找 *" << endl;
cout << "* (5)显 示 *" << endl;
cout << "* (6)返回上一层 *" << endl;
cout << "****************************" << endl;
cout << "请输入对应的数字:";
}
void main_interface(){ //主界面
cout << "***********************************************" << endl;
cout << "* 图 书 管 理 系 统 *" << endl;
cout << "* *" << endl;
cout << "* (1) 借 书 *" << endl;
cout << "* *" << endl;
cout << "* (2) 还 书 *" << endl;
cout << "* *" << endl;
cout << "* (3) 图 书 管 理 *" << endl;
cout << "* *" << endl;
cout << "* (4) 用 户 管 理 *" << endl;
cout << "* *" << endl;
cout << "* (0) 退 出 *" << endl;
cout << "***********************************************" << endl;
cout << "请输入对应的数字:";
}
void borrowtoreturn(char br){
//借书还书函数.参数br用来判断是“借书”还是“还书”.1为“借书”,2为“还书”
int rdid = 0;
int bkid = 0;
int rsuffix, bsuffix;
bdatabase t_bd;
rdatabase t_rd;
if (br == '1'){ //借书
rsuffix = t_rd.findreaders(rdid);
bsuffix = t_bd.findbooks(bkid);
if (rsuffix == -1 || bsuffix == -1)
return;
if (t_bd.btarray[bsuffix].b_flag == 2){
cout << "图书已经借出，请选择其它图书" << endl;
return;
}
if (t_rd.rdarray[rsuffix].r_bor == 1){
cout << "你已经借过图书，请先归还再借其它图书" << endl;
return;
}
t_bd.btarray[bsuffix].b_flag = 2;
t_rd.rdarray[rsuffix].r_bor = 1;
t_rd.rdarray[rsuffix].brbook = t_bd.btarray[bsuffix];
return;
}
if (br == '2'){
rsuffix = t_rd.findreaders(rdid);
bsuffix = t_bd.findbooks(bkid);
if (rsuffix == -1 || bsuffix == -1)
return;
if (t_rd.rdarray[rsuffix].brbook.no == t_bd.btarray[bsuffix].no){
t_bd.btarray[bsuffix].b_flag = 1;
t_rd.rdarray[rsuffix].r_bor = 2;
t_rd.rdarray[rsuffix].brbook = t_bd.btarray[bsuffix];
}else{
cout << "请重新输入，读者借的图书号不正确" << endl;
return;
}
return;
}
}
void booksmange(){
char in;
bdatabase bd;
do{
book_interface();
cin >> in;
switch (in){
case '1':
bd.addbooks();
break;
case '2':
bd.editbooks();
break;
case '3':
bd.delbooks();
break;
case '4':
bd.findbooks();
break;
case '5':
bd.listbooks();
break;
case '6':
break;
default:cout << "输入错误，请重新输入。" << endl;;
}
}
while(in != '6');
return;
}
void readersmange(){
char in;
rdatabase bd;
do{
reader();
cin >> in;
switch (in){
case '1':
bd.addreaders();
break;
case '2':
bd.editreaders();
break;
case '3':
bd.delreaders();
break;
case '4':
bd.findreaders();
break;
case '5':
bd.listreaders();
break;
case '6':
break;
default:cout << "输入错误，请重新输入。" << endl;
}
}
while (in != '6');
return;
}
int main(int argc, char* argv[]){
char in;
do{
main_interface();
cin >> in;
switch (in){
case '1':
borrowtoreturn(in);
break;
case '2':
borrowtoreturn(in);
break;
case '3':
booksmange();
break;
case '4':
readersmange();
break;
case '0':
break;
default:
cout << "输入错误，请重新输入。" << endl;
}
}
while (in != '0');
return 0;
}
可以参考此文章，希望对你有帮助
https://blog.csdn.net/hpu_yangchen/article/details/107325487
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