book.txt

个人开发的图书借阅管理系统.程序还存在一定的漏洞,希望大家批评改正

#include<iostream.h> 
#include<fstream.h>
#include<iomanip.h>
static int n=0;
int comp(char*,char*);
class student
{
public:
 void getdata()
 {
  tag='#';
  cout<<"(姓名 身份证号码 班级 成绩):";
  cin>>name>>number>>Class>>score;
 }
 char gettag()
 {
  return tag;
 }
 void disp()
 {
  if(tag=='#')
   cout<<setiosflags(ios::left)
   <<setw(10)<<name<<setw(18)<<number<<setw(20)<<Class<<setw(20)<<score<<endl;
 }
 char *getname()
 {
  return name;
 }
private:
 char tag;
 char name[12];
 char number[18];
 char Class[20];
 char score[6];
};
class teacher
{
public:
 void getdata()
 {
  tag='#';
  cout<<"(姓名 身份证号码 职称 学院):";
  cin>>name>>number>>zhichen>>xueyuan;
 }
 char gettag()
 {
  return tag;
 }
 void disp()
 {
  if(tag=='#')
   cout<<setiosflags(ios::left)
   <<setw(10)<<name<<setw(18)<<number<<setw(20)<<zhichen<<setw(20)<<xueyuan<<endl;
 }
 char *getname()
 {
  return name;
 }
private:
 char tag;
 char name[12];
 char number[18];
 char zhichen[20];
 char xueyuan[30];
};

class studentteacher
{
public:
 void getdata()
 {
  tag='#';
  cout<<"(姓名 身份证号码 班级 成绩 职称 学院):";
  cin>>name>>number>>Class>>score>>zhichen>>xueyuan;
 }
 char gettag()
 {
  return tag;
 }
 void disp()
 {
  if(tag=='#')
   cout<<setiosflags(ios::left)
   <<setw(10)<<name<<setw(18)<<number<<setw(20)<<Class<<setw(20)<<score<<setw(20)<<zhichen<<setw(20)<<xueyuan<<endl;
 }
 char *getname()
 {
  return name;
 }
private:
 char tag;
 char name[12];
 char number[18];
 char Class[20];
 double score;
 char zhichen[20];
 char xueyuan[30];
};
void func1()
{
 ofstream output("MyFrd.dat");
 student s;
 cout<<"输入数据"<<endl;
 cout<<"学生人数：";
 cin>>n;
 for(int i=0;i<n;i++)
 {
  cout<<"第"<<i+1<<"个学生";
  s.getdata();
  output.write((char *)&s,sizeof(s));
 };
 output.close();
}
void func2()
{
 ifstream input("MyFrd.dat");
 student s;
 cout<<"输出数据"<<endl;
 cout<<setiosflags(ios::left)
  <<setw(10)<<"姓名"<<setw(18)<<"身份证号码"<<setw(20)<<"班级"<<setw(6)<<"成绩"<<endl;
 input.read((char *)&s,sizeof(s));
 while(input)
 {
  s.disp();
  input.read((char*)&s,sizeof(s));
 };
 input.close();
}
void func3()
{
 char sname[10];
 ifstream file("MyFrd.dat");
 student one;
 file.seekg(0);
 cout<<"输入要查询的姓名（可只输入姓氏）：";
 cin>>sname;
 cout<<"输出查询结果："<<endl;
 cout<<setiosflags(ios::left)
  <<setw(10)<<"姓名"<<setw(18)<<"身份证号码"<<setw(20)<<"班级"<<setw(6)<<"成绩"<<endl;
 file.read((char*)&one,sizeof(one));
 while(file)
 {
  if(comp(one.getname(),sname)==1)
   one.disp();
  file.read((char*)&one,sizeof(one));
 };
 file.close();
}
void func4()
{
 fstream outapp("MyFrd.dat",ios::app);
 student one;
 cout<<"添加数据：";
 one.getdata();
 outapp.write((char*)&one,sizeof(one));
 outapp.close();
}
void func5()
{
 char sname[12];
 int i=0;
 fstream outdel("MyFrd.dat",ios::in|ios::out);
 student one;
 outdel.seekg(0);
 cout<<"输入要删除的姓名（可只输入姓氏）：";
  cin>>sname;
 while(!outdel.eof())
 {
  outdel.seekp(sizeof(student)*i);
  outdel.read((char *)&one,sizeof(one));
  if(comp(one.getname(),sname)==1&&one.gettag()=='#')
  {
   outdel.seekp(sizeof(student) *i);
   outdel.put('*');
  }
  i++;
 }
 outdel.close();
}
void func6()
{
 fstream outdel("student.dat",ios::in);
 fstream temp("temp",ios::out|ios::trunc);
 student s;
 while(!outdel.eof())
 {
  outdel.read((char *)&s,sizeof(student));
  if(s.gettag()=='#')
   temp.write((char *)&s,sizeof(student));
 }
 outdel.close();
 temp.close();
 fstream outdel1("MyFrd.dat",ios::out|ios::trunc);
 fstream temp1("temp",ios::in);
 while(!temp1.eof())
 {
  temp1.read((char *)&s,sizeof(student)); 
  outdel1.write((char *)&s,sizeof(student));
 }
 outdel1.close();
 temp1.close();
 cout<<"此记录已物理删除"<<endl;
}

void func7()
{
 ofstream output("MyFrd1.dat");
 teacher s;
 cout<<"输入数据"<<endl;
 cout<<"教师人数：";
 cin>>n;
 for(int i=0;i<n;i++)
 {
  cout<<"第"<<i+1<<"个教师";
  s.getdata();
  output.write((char *)&s,sizeof(s));
 };
 output.close();
}
void func8()
{
 ifstream input("MyFrd1.dat");
 teacher s;
 cout<<"输出数据"<<endl;
 cout<<setiosflags(ios::left)
  <<setw(10)<<"姓名"<<setw(18)<<"身份证号码"<<setw(20)<<"职称"<<setw(20)<<"学院"<<endl;
 input.read((char *)&s,sizeof(s));
 while(input)
 {
  s.disp();
  input.read((char*)&s,sizeof(s));
 };
 input.close();
}
void func9()
{
 char sname[10];
 ifstream file("MyFrd1.dat");
 teacher one;
 file.seekg(0);
 cout<<"输入要查询的姓名（可只输入姓氏）：";
 cin>>sname;
 cout<<"输出查询结果："<<endl;
 cout<<setiosflags(ios::left)
  <<setw(10)<<"姓名"<<setw(18)<<"身份证号码"<<setw(20)<<"职称"<<setw(20)<<"学院"<<endl;
 file.read((char*)&one,sizeof(one));
 while(file)
 {
  if(comp(one.getname(),sname)==1)
   one.disp();
  file.read((char*)&one,sizeof(one));
 };
 file.close();
}
void func0()
{
 fstream outapp("MyFrd.dat1",ios::app);
 teacher one;
 cout<<"添加数据：";
 one.getdata();
 outapp.write((char*)&one,sizeof(one));
 outapp.close();
}
void func01()
{
 char sname[12];
 int i=0;
 fstream outdel("MyFrd1.dat",ios::in|ios::out);
 teacher one;
 outdel.seekg(0);
 cout<<"输入要删除的姓名（可只输入姓氏）：";
  cin>>sname;
 while(!outdel.eof())
 {
  outdel.seekp(sizeof(teacher)*i);
  outdel.read((char *)&one,sizeof(one));
  if(comp(one.getname(),sname)==1&&one.gettag()=='#')
  {
   outdel.seekp(sizeof(teacher) *i);
   outdel.put('*');
  }
  i++;
 }
 outdel.close();
}
void func02()
{
 fstream outdel("teacher.dat",ios::in);
 fstream temp("temp",ios::out|ios::trunc);
 teacher s;
 while(!outdel.eof())
 {
  outdel.read((char *)&s,sizeof(teacher));
  if(s.gettag()=='#')
   temp.write((char *)&s,sizeof(teacher));
 }
 outdel.close();
 temp.close();
 fstream outdel1("MyFrd1.dat",ios::out|ios::trunc);
 fstream temp1("temp",ios::in);
 while(!temp1.eof())
 {
  temp1.read((char *)&s,sizeof(teacher)); 
  outdel1.write((char *)&s,sizeof(teacher));
 }
 outdel1.close();
 temp1.close();
 cout<<"此记录已物理删除"<<endl;
}
void func03()
{
 ofstream output("MyFrd2.dat");
 studentteacher s;
 cout<<"输入数据"<<endl;
 cout<<"学生人数：";
 cin>>n;
 for(int i=0;i<n;i++)
 {
  cout<<"第"<<i+1<<"个学生";
  s.getdata();
  output.write((char *)&s,sizeof(s));
 };
 output.close();
} 



void func04()
{
 ifstream input("MyFrd2.dat");
 studentteacher s;
 cout<<"输出数据"<<endl;
 cout<<setiosflags(ios::left)
  <<setw(10)<<"姓名"<<setw(18)<<"身份证号码"<<setw(20)<<"班级"<<setw(20)<<"成绩"<<setw(20)<<"职称"<<setw(20)<<"学院"<<endl;
 input.read((char *)&s,sizeof(s));
 while(input)
 {
  s.disp();
  input.read((char*)&s,sizeof(s));
 };
 input.close();
}
void func05()
{
 char sname[10];
 ifstream file("MyFrd2.dat");
 studentteacher one;
 file.seekg(0);
 cout<<"输入要查询的姓名（可只输入姓氏）：";
 cin>>sname;
 cout<<"输出查询结果："<<endl;