cpp1.cpp

学生管理系统 学生管理系统 学生管理系统

//实习
#include <iostream.h>
#include <fstream.h>
#include <iomanip.h>
static int n=0;
int comp(char*,char*);
class MyFriend
{
	char tag;
	unsigned int OrdNum;      //定义序号
	char RegNum[12];          //定义学号
	char Name[7];             //定义姓名
	unsigned int Age;         //定义年龄
	char Sex[3];              //定义性别
	char Bedroom[6];          //定义宿舍 
	char TelNo[9];            //定义电话
public:
	int getMyFriendNo()
	{
		return Age;
	}
	void getdata()
	{
		tag='#';
        cout<<"(序号 学号 姓名 年龄 性别 宿舍 电话):";
		cin>>OrdNum>>RegNum>>Name>>Age>>Sex>>Bedroom>>TelNo;
	}
	char gettag()
	{
		return tag;
	}
	void disp()
	{
		if(tag=='#')
			cout<<setiosflags(ios::left)
				<<setw(7)<<OrdNum<<setw(16)<<RegNum<<setw(11)<<Name<<setw(7)<<Age<<setw(7)<<Sex
				<<setw(10)<<Bedroom<<setw(13)<<TelNo<<endl;
	}
	char *getname()
	{
		return Name;
	}
};
void func1()
{
	ofstream output("MyFrd.dat");
	MyFriend s;
	cout<<"输入学生档案"<<endl;
	cout<<"输入学生人数:";
	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");
    MyFriend s;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<"-----------------------------------学生档案------------------------------------"<<endl;
	cout<<setiosflags(ios::left)
		<<setw(7)<<"序号"<<setw(16)<<"学号"<<setw(11)<<"姓名"<<setw(7)<<"年龄"<<setw(7)<<"性别"
		<<setw(10)<<"宿舍"<<setw(13)<<"电话"<<endl;
	cout<<"-------------------------------------------------------------------------------"<<endl;
	
	input.read((char *)&s, sizeof(s));
	while(input)
	{
		s.disp();
		input.read((char*)&s,sizeof(s));
	};
	cout<<"-------------------------------------------------------------------------------"<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
	cout<<endl;
    input.close();
	char p;
	do
	{
		cout<<"请按Q键返回主菜单......";
		cin>>p;
	}while((p!='q')&(p!='Q'));
	cout<<endl;
	cout<<endl;

}

void func3()
{
	char sname[10];
	ifstream file("MyFrd.dat");
    MyFriend one;
	file.seekg(0);
	cout<<"输入要查询的姓名（可输入姓氏）:";
	cin>>sname;
	cout<<"输出查询结果:"<<endl;
	cout<<setiosflags(ios::left)
		<<setw(7)<<"序号"<<setw(16)<<"学号"<<setw(11)<<"姓名"<<setw(7)<<"年龄"<<setw(7)<<"性别"
		<<setw(10)<<"宿舍"<<setw(13)<<"电话"<<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);
	MyFriend 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);
	MyFriend 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(MyFriend)*i);
		outdel.read((char*)&one,sizeof(one));    
		if (comp(one.getname(),sname)==1 && one.gettag()=='#')
		 {
	         outdel.seekp(sizeof(MyFriend)*i);
	         outdel.put('*');
		 }
         i++;
	}
	outdel.close();
}
void func6()
{
	fstream outdel("myfrd.dat",ios::in);
	fstream temp("temp",ios::out|ios::trunc);
	MyFriend s;
	while(!outdel.eof())
	{
		  outdel.read((char *)&s,sizeof(MyFriend));
		  if (s.gettag()=='#')
			    temp.write((char *)&s,sizeof(MyFriend));
	}
	outdel.close();
	temp.close();
	fstream outdel1("MyFrd",ios::out|ios::trunc);
	fstream temp1("temp",ios::in);
	while (!temp1.eof())
	{
		temp1.read((char *)&s,sizeof(MyFriend));
		outdel1.write((char *)&s,sizeof(MyFriend));
	}
	outdel1.close();
	temp1.close();
	cout<<"此记录已物理删除"<<endl;
}
int comp(char s1[],char s2[])
{
	int i=0;
	while (s1[i]!='\0' && s2[i]!='\0' && s1[i]==s2[i])
		i++;
	if(s1[i]=='\0' || s2[i]=='\0')
		return 1;
	else
		return 0;
}
void menu()
{
	cout<<"                                                                     "<<endl;
	cout<<"                                                                     "<<endl;
	cout<<"                                                                     "<<endl;
	cout<<"                            计算机系学生档案管理系统                 "<<endl;
	cout<<"               **************************************************    "<<endl;
	cout<<"               $                 1.输入学生档案                 $    "<<endl;
	cout<<"               $                                                $    "<<endl;
	cout<<"               $                 2.输出学生档案                 $    "<<endl;
	cout<<"               $                                                $    "<<endl;	
	cout<<"               $                 3.查询学生档案                 $    "<<endl;
	cout<<"               $                                                $    "<<endl;
	cout<<"               $                 4.添加学生档案                 $    "<<endl;
	cout<<"               $                                                $    "<<endl;
	cout<<"               $                 5.逻辑删除档案                 $    "<<endl;
	cout<<"               $                                                $    "<<endl;
	cout<<"               $                 6.物理删除档案                 $    "<<endl;
	cout<<"               $                                                $    "<<endl;
	cout<<"               $                 7.按任意键退出                 $    "<<endl;
	cout<<"               **************************************************    "<<endl;
	cout<<"                                                                     "<<endl;
}

void main()
{
	int sel;
	menu();
	do
	{
		cout<<"               请输入您所要选择的功能(1-7):";
		cin>>sel;
		cout<<endl;
		cout<<endl;
		cout<<endl;
		cout<<endl;
		cout<<endl;
		switch(sel)
		{
			case 1:func1();break;
			case 2:func2();menu();break;
			case 3:func3();break;
			case 4:func4();break;
			case 5:func5();break;
			case 6:func6();break;
		}
	}while(sel>=1 && sel<=6);
}