void StartProcess(void)
{
	fstream file("data.dat", ios_base::in);// attempt open for read
	if (!file)
	{
		// file doesn't exist; create a new one
		file.open("data.dat", ios_base::out); 
		file.close();
		return;
	}
	else //ok, file exists
	{
		int iStudent=0, iCourse=0;
		string TeaPassword;

		file>>iStudent;
		for(int i=0; i<iStudent; ++i)
		{
			Student temStu;
			string name;
			long id;
			string Class;
			string password;
			file>>name>>id>>Class>>password;
			temStu.SetName(name);
			temStu.SetId(id);
			temStu.SetClass(Class);
			temStu.SetPassword(password);

			int n;
			file>>n;
			int *cn=new int[n], *grade=new int[n];
			for(int i=0; i<n; ++i)
				file>>cn[i]>>grade[i];
			temStu.Initialize(n,cn,grade);
			delete[] cn;
			delete[] grade;

			data.AddStu(temStu);
			{}
		}
		file>>iCourse;
		for(int i=0; i<iCourse; ++i)
		{
			
			Course temCou;
			string name;
			int Number;
			int credit;
			file>>name>>Number>>credit;
			temCou.SetName(name);
			temCou.SetNumber(Number);
			temCou.SetCredit(credit);

			int n;
			file>>n;
			int *id=new int[n], *grade=new int[n];
			for(int i=0; i<n; ++i)
				file>>id[i]>>grade[i];
			temCou.Initialize(n,id,grade);
			delete[] id;
			delete[] grade;

			data.AddCou(temCou);
		}
		file>>TeaPassword;
		data.SetTeaPassword(TeaPassword);
		file.close();
	}
	return;
}