图书馆管理系统C代码.doc

// tushuguanli.cpp : Defines the entry point for the console application.
#include <string>
#include <fstream>
#include <iostream>/
using namespace std;
const int BMAX=50;

//图书数据库类

class bdatabase
{
public:
book btarray[BMAX];
int top;
public:
bdatabase()
{

book b;
top=-1;
fstream file("book.txt",ios::in); //打开文献
while (1)
{
file.read((char *)&b,sizeof(b));
if (!file) break;
top++;
btarray[top] = b;
}
file.close(); //关闭文献
}

~bdatabase() //析构函数， 将btarray[]写到book.txt文献中
{
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() //往图书数据库中加图书
{
book bk;
int no;
char bname[20];
cout<<"请输入书号: ";
cin>>no;
cout<<endl<<"请输入书名: ";
cin>>bname;
cout<<endl;
bk.b_flag=1;
bk.addbook(no, bname);
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<<" 书旳名称: "<<btarray[i].name<<" 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<<" 书旳名称: "<<btarray[cur].name<<endl;
cout<<"请修改数据："<<endl;
cout<<endl<<"书旳名称: ";
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) //删除时判断图书与否借出
{
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() //显示所有图书
{
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<<" 书旳名称: "<<btarray[i].name<<" 图书状态 :"<<value<<endl;
}
}
return;
}
}
;
class book
{
public:
int no; //图书编号
char name[20]; //图书名称
int b_flag;
int b_del;
public :
book(){}
void setno(int n)
{
no=n;
int getno()
{
return no; //返回图书编号值
}
void setname(char na[])
{
strcpy(name, na); //字符串复制
}
char* getname()
{
return name; //返回图书名称
}
void borbook()
{
b_flag=2; //借书标志
}
void delbook()
{
b_del=2; //删除标志
}
void addbook(int no,char na[]) //增长图书功能
{
setno(no);
setname(na);
b_flag=1;
b_del=1;
}
}
;

//读者类
class reader
{
public:
int no;
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[])//增长读者
{
no = id;
strcpy(name, na);
r_del=1;
}
void setbrbook(book bt) //设立借书标记
{
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); //打开文献
while (1)
{
file.read((char *)&rd,sizeof(rd));
if (!file) break;
top++;
rdarray[top]=rd;
}
file.close(); //关闭文献
}

~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() //添加读者
{
reader rd;
int no;
char rname[20];
cout<<"请输入学号: ";
cin>>no;
cout<<endl<<"请输入姓名: ";
cin>>rname;
cout<<endl;
rd.addreader(no, rname);
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<<" 与否借书: "<<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干删除
{
int cur;
cur = findreaders();
if (cur==-1)
{
return;
}
if(rdarray[cur].r_bor==1)
{
cout<<"该顾客借了图书，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<<" 与否借书: "<<value<<endl;
}
}
return;
}

}
;

void bookjiemain() //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;
}

void readerjiemian() //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;
}

void mainjiemian() //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) 顾客管理 *"<<endl;
cout<<"* *"<<endl;
cout<<"* (0) 退 出 *"<<endl;
cout<<"***********************************************"<<endl;
}

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，请选择其他图书"<<endl;
return;
}
if(t_rd.rdarray[rsuffix].r_bor==1)
{
cout<<"你已经借过图书，请先归还再借其他图书"<<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，读者借旳图书号不对旳"<<endl;
return;
}
return;
}
}

void booksmange()
{
char in;
bdatabase bd;
do{
bookjiemain();
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，请从新输入。"<<endl;;
}
}while(in!='6');
return;
}

void readersmange()
{
char in;
rdatabase bd;
do{
readerjiemian();
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，请从新输入。"<<endl;
}
}while(in!='6');
return;

}

int main(int argc, char* argv[])
{ char in;
do{
mainjiemian();
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，请从新输入。"<<endl;
}
}while(in!='0');
return 0;
}