static void Main(string[] args)
{
List <Person> list = new List <Person>();
Console.WriteLine("So luong nguoi muon nhap");
int N = Int32.Parse(Console.ReadLine());
for (int i = 0; i < N; i++)
{
Console.WriteLine("Bam 1 de them giang vien");
Console.WriteLine("Bam 2 de them sinh vien");
int n = Convert.ToInt32(Console.ReadLine());
switch (n)
{
case 1:
Teacher gv = new Teacher();
gv.Input();
list.Add(gv);
break;
case 2:
Student std = new Student();
std.Input();
list.Add(std);
break;
default:
Console.WriteLine("Nhap sai");
break;
}
}
//Xuat danh sach SV
var lsStudent = from s in list where s is Student select(Student) s;
foreach (Student c in lsStudent)
{
c.Output();
}
//Xuat danh sach GV
var lsTeacher = from s in list where s is Teacher select(Teacher) s;
foreach (Teacher c in lsTeacher)
{
c.Output();
}
//Xuat sinh vien co diem cao nhat thuoc khoa CNTT
Student stu = (list.Where(s => s is Student && ((Student)s).Khoa == "CNTT")
.Select(s => (Student)s)).OrderByDescending(p => p.DiemTb)
.FirstOrDefault();
stu.Output();
//Tim Giang vien va sinh vien co find key
string findKey = Console.ReadLine();
FindPeoplebyFindkey(findKey, list);
}
static void Main(string[] args)
{
Console.Write("NHAP SO NGUOI: ");
int n = Convert.ToInt32(Console.ReadLine());
List <Person> listPerson = new List <Person>();
List <Student> listStudent = new List <Student>();
List <Teacher> listTeacher = new List <Teacher>();
byte option = 9;
while (option != 0)
{
Console.WriteLine();
Console.WriteLine("1. NHAP THONG TIN CHO SINH VIEN");
Console.WriteLine("2. NHAP THONG TIN CHO GIAO VIEN");
Console.WriteLine("3. XUAT THONG TIN CAC HOC SINH");
Console.WriteLine("4. XUAT THONG TIN CAC GIAO VIEN");
Console.WriteLine("5. TIM SINH VIEN CO DIEM CAO NHAT THUOC KHOA CNTT");
Console.WriteLine("6. TIM KIEM THONG TIN THEO TEN");
Console.WriteLine("0. LUU VA THOAT");
Console.Write("> ");
option = Convert.ToByte(Console.ReadLine());
switch (option)
{
case 1:
{
if (listPerson.Count() == n)
{
Console.Write("\nSO LUONG NGUOI DA TOI DA! VUI LONG NHAP LUA CHON KHAC..\n");
break;
}
Student sv = new Student();
sv.Input();
listStudent.Add(sv);
listPerson.Add(sv);
break;
}
case 2:
{
if (listPerson.Count() == n)
{
Console.Write("\nSO LUONG NGUOI DA TOI DA! VUI LONG NHAP LUA CHON KHAC..\n");
break;
}
Teacher tc = new Teacher();
tc.Input();
listTeacher.Add(tc);
listPerson.Add(tc);
break;
}
case 3:
{
foreach (Student sv in listStudent)
{
sv.Output();
}
break;
}
case 4:
{
foreach (Teacher tc in listTeacher)
{
tc.Output();
}
break;
}
case 5:
{
List <Student> listSVKhoaCNTT = listStudent.Where(sv => sv.Khoa.ToLower() == "cntt").ToList();
float maxScore = listSVKhoaCNTT.Max(p => p.DiemTrungBinh);
Console.WriteLine("\n== DANH SACH SINH VIEN CO DTB CAO NHAT VA THUOC KHOA CNTT ==");
foreach (Student sv in listSVKhoaCNTT)
{
if (sv.DiemTrungBinh == maxScore)
{
sv.Output();
}
}
break;
}
case 6:
{
Console.Write("\nHAY NHAP TEN CAN TIM KIEM: ");
string inputName = Console.ReadLine();
Person find = listPerson.FirstOrDefault(p => p.HoTen == inputName.ToLower());
Console.WriteLine("\n== DANH SACH TIM KIEM THEO TEN VUA NHAP ==");
find.Output();
break;
}
default: break;
}
}
Console.ReadLine();
}