源码地址：http://t.csdn.cn/rN0Bh
修改部分：
- 将价格int改为double，对于书本的价格，价格往往不是整数，因此换为浮点型。
- 原来的代码缺少安全性，所有人都可以删除，增加图书，导致安全性降低，因此分成两个群体，一个是图书管理员和借阅者两个群体。图书管理员可对图书进行，增加图书，删除图书，修改图书信息，清空图书，查找图书，而对于借阅者来说，只有查找和显示图书架的功能。对于图书管理员身份验证，需要登录。
修改前的进入页面
代码：
#include <iostream>
#include <string>
#include<windows.h>
using namespace std;
#define MAX 1000
struct Person {
string name;
double price;
string number;
};
struct Arraybooks {
struct Person book[MAX];
int length;
};
void mean();
int outSystem();
void addBooks(Arraybooks* abs);
void deleteBooks(Arraybooks* abs);
int isExist(Arraybooks* abs, string name);
void CheckBook(Arraybooks* abs);
void cleanbooks(Arraybooks* abs);
void showbooks(Arraybooks* abs);
void changebooks(Arraybooks* abs);
void mean1();
int main() {
int x;
Arraybooks abs;
abs.length = 0;
while (true) {
system("color F1") ;
cout << "******欢迎来到图书馆*****" << endl; //OK
cout << "*******1、借阅者*********" << endl;//OK
cout << "*******2、图书管理员*****" << endl;//OK
cout << "*******0、退出***********" << endl;//OK
cout<<"请输入你的选择："<<endl;
int ch;
cin>>ch;
system("cls");
if(ch==1){
mean1();
cin>>x;
system("cls");
switch (x) {
case 1:
CheckBook(&abs);
break;
case 2:
showbooks(&abs);
break;
case 3:
outSystem();
break;
}
}
if(ch==2){
while(true){
system("cls");
string id;
string password;
cout<<"请输入你的账号：";
cin>>id;
cout<<"请输入你的密码：";
cin>>password;
string iid="pgh";
string ips="123456";
system("cls");
if(id==iid&&password==ips)
{
mean();
cin >> x;
switch (x) {
case 1:
addBooks(&abs);
break;
case 2:
deleteBooks(&abs);
break;
case 3:
CheckBook(&abs);
break;
case 4:
cleanbooks(&abs);
break;
case 5:
changebooks(&abs);
break;
case 6:
showbooks(&abs);
break;
case 0:
outSystem();
break;
}
}
}
}
}
return 0;
}
void addBooks(Arraybooks* abs) {
if (abs->length >= MAX) {
cout << "书籍已满" << endl;
}
else {
string name;
cout << "请输入书籍的名字: " << endl;
cin >> name;
abs->book[abs->length].name = name;
double price;
cout << "请输入书的价格： " << endl;
cin >> price;
abs->book[abs->length].price = price;
string num;
cout << "请输入书的编号： " << endl;
cin >> num;
abs->book[abs->length].number = num;
abs->length++;
cout << "添加成功" << endl;
}
}
int isExist(Arraybooks* abs, string name) {
for (int i = 0; i < abs->length; ++i) {
if (abs->book[i].name == name) {
return i;
}
}
return -1;
}
void deleteBooks(Arraybooks* abs) {
cout << "请输入你要删除的书籍" << endl;
string name;
cin >> name;
int ret = isExist(abs, name);
if (ret != -1 && ret != abs->length - 1) {
abs->book[ret].name = abs->book[ret + 1].name;
abs->book[ret].number = abs->book[ret + 1].number;
abs->book[ret].price = abs->book[ret + 1].price;
for (int i = ret + 2; i < abs->length; ++i) {
abs->book[i - 1].name = abs->book[i].name;
abs->book[i - 1].number = abs->book[i].number;
abs->book[i - 1].price = abs->book[i].price;
abs->length--;
}
cout << "删除成功" << endl;
}
else if(ret != 1 && ret == abs->length - 1) {
abs->length--;
}
else {
cout << "查无此书" << endl;
}
}
void CheckBook(Arraybooks* abs) {
cout << "输入你要查找的书籍" << endl;
string name;
cin >> name;
int ret = isExist(abs, name);
if (ret != -1) {
cout << "书名为：" << abs->book[ret].name << "\t";
cout << "书价格为：" << abs->book[ret].price << "\t";
cout << "书编号为：" << abs->book[ret].number << endl;
}
else {
cout << "查无此书" << endl;
}
}
void cleanbooks(Arraybooks* abs) {
abs->length = 0;
cout << "清理完成" << endl;
}
void changebooks(Arraybooks* abs) {
cout << "输入你要修改的图书" << endl;
string name;
cin >> name;
int ret = isExist(abs, name);
if (ret != -1) {
cout << "请输入名字： " << endl;
string name;
cin >> name;
abs->book[ret].name = name;
cout << "请输入价格： " << endl;
double price;
cin >> price;
abs->book[ret].price = price;
cout << "请输入编号: " << endl;
string num;
cin >> num;
abs->book[ret].number = num;
}
else {
cout << "查无此书" << endl;
}
}
void showbooks(Arraybooks* abs) {
if (abs->length == 0) {
cout << "书架为空" << endl;
}
else {
for (int i = 0; i < abs->length; ++i) {
cout << "书籍名字 ： " << abs->book[i].name << "\t";
cout << "书籍价格 ： " << abs->book[i].price << "\t";
cout << "书籍编号 ： " << abs->book[i].number << endl;
}
}
}
int outSystem() {
cout << "欢迎下次使用" << endl;
return 0;
}
void mean() {
system("color 79");
cout << "****欢迎来到管理员系统****" << endl;
cout << "*******1、加入图书********" << endl; //OK
cout << "*******2、按名删除图书****" << endl;//OK
cout << "*******3、按名查找图书****" << endl;//OK
cout << "*******4、清空图书架******" << endl;//OK
cout << "*******5、修改图书名******" << endl;
cout << "*******6、显示图书架******" << endl;//OK
cout << "*******0、退出系统********" << endl; //OK
cout << "**************************" << endl;
}
void mean1()
{
system("color 81") ;
cout << "*****欢迎来到借阅系统*****" << endl;
cout << "*******1、按名查找图书****" << endl;//OK
cout << "*******2、显示图书架******" << endl;//OK
cout << "*******0、退出系统********" << endl; //OK
cout << "**************************" << endl;
cout<<"请输入你的选择："<<endl;
}
2.1分为管理员系统和借阅者。
2.2借阅者可以访问的功能
2.3图书管理员的身份需要登录验证
2.4图书管理员页面
