Cần mọi người tư vấn giúp về đoạn mã có liên quan đến Struct và Enum

#include <iostream>
using namespace std;

// Khai bao cau truc 
struct SV
	{
		char *ten; 
		char ten[50];
		struct
		{
			char tenMon[50];
			float diem;
		} mon1, mon2, mon3;
		float diemTB;
		enum loai
		{
			XUAT_SAC,
			GIOI,
			KHA,
			TRUNG_BINH,
			YEU 
		} xepLoai;//bien kieu enum
	} sinhVien;
	
int main()
{
	cout << " Ho va ten Sinh Vien: ";
	cin >> sinhVien.ten;
	sinhVien.(*ten) = sinhVien.ten;
	cout << endl;
	cout << *(sinhVien.(*ten));
	cout << "Mon 1 la: ";
	cin >> sinhVien.mon1.tenMon;
	cout << endl;
	cout << "Diem Mon 1 la: ";
	cin >> sinhVien.mon1.diem;
	cout << endl;
	
	cout << "Mon 2 la: ";
	cin >> sinhVien.mon2.tenMon;
	cout << endl;
	cout << "Diem Mon 2 la: ";
	cin >> sinhVien.mon2.diem;
	cout << endl;

	cout << "Mon 3 la: ";
	cin >> sinhVien.mon3.tenMon;
	cout << endl;
	cout << "Diem Mon 3 la: ";
	cin >> sinhVien.mon3.diem;
	cout << endl;
	
	sinhVien.diemTB = (sinhVien.mon1.diem + sinhVien.mon2.diem + 
	sinhVien.mon3.diem)/3.0;
	
	cout << "*******************************************" << endl;
	cout << "SINH VIEN: " << sinhVien.ten << endl;
	cout << "DIEM TRUNG BINH 3 MON " << sinhVien.mon1.tenMon << 
		", " << sinhVien.mon2.tenMon << ", " << sinhVien.mon3.tenMon <<
		": " << sinhVien.diemTB << endl;
	
	(sinhVien.diemTB < 5.0) ? sinhVien.xepLoai = sinhVien.xepLoai.YEU  : cout << "";
	(sinhVien.diemTB < 6.5) ? sinhVien.xepLoai = sinhVien.xepLoai.TRUNG_BINH : cout << "";
	(sinhVien.diemTB < 8.0) ? sinhVien.xepLoai = sinhVien.xepLoai.KHA : cout << "";
	(sinhVien.diemTB < 9.0) ? sinhVien.xepLoai = sinhVien.xepLoai.GIOI : cout << "";
	(sinhVien.diemTB <= 10.0) ? sinhVien.xepLoai = sinhVien.xepLoai.XUAT_SAC : cout << "";
	
	(sinhVien.xepLoai == YEU) ? cout << "XEP LOAI YEU" : cout << "";
	(sinhVien.xepLoai == TRUNG_BINH) ? cout << "XEP LOAI TRUNG BINH" : cout << "";
	(sinhVien.xepLoai == KHA) ? cout << "XEP LOAI KHA" : cout << "";
	(sinhVien.xepLoai == GIOI) ? cout << "XEP LOAI GIOI" : cout << "";
	(sinhVien.xepLoai == XUAT_SAC) ? cout << "XEP LOAI XUAT SAC" : cout << "";
	return 0;
}