#include <stdio.h>
#include <string.h>
#include <Windows.h>
#include <conio.h>
#include <iostream>
#include <fstream> 
#include <iomanip> 
using namespace std;
struct diem{
	float gk1, ck1, tb1, gk2, ck2, tb2;
	float hk1, hk2, cn;
};
struct ketqua{
	diem mon[10];
	float tbm;
	int xeploai;
};
struct sinhvien{
	char ten[31];
	char namsinh[5];
	char cmnd[15];
	char sdt[15];
	char diachi[31];
	char lop[15];
	char mssv[9];
	int gioi, kha, tb, yeu;
	ketqua ketquasv;
};
void xeploai1(sinhvien sv[], int n, int somon, int &gioi, int &kha, int &tb, int &yeu);
void nhapdiem(sinhvien &sv, int n)
{
	int i;
	for (i = 1; i <= n; i++)
	{
		printf("\tMon %d: \n", i);
		printf("\t\tHoc ki 1:\n");
		printf("\t\t\tDiem thi giua ki: "); scanf_s("%f.\n", &sv.ketquasv.mon[i].gk1);
		printf("\t\t\tDiem thi cuoi ki: "); scanf_s("%f.\n", &sv.ketquasv.mon[i].ck1);
		sv.ketquasv.mon[i].hk1 = sv.ketquasv.mon[i].gk1 * 0.3 + sv.ketquasv.mon[i].ck1 * 0.7;
		printf("\n\t\tHoc ki 2:\n");
		printf("\t\t\tDiem thi giua ki: "); scanf_s("%f.\n", &sv.ketquasv.mon[i].gk2);
		printf("\t\t\tDiem thi cuoi ki: "); scanf_s("%f.\n", &sv.ketquasv.mon[i].ck2);
		sv.ketquasv.mon[i].hk2 = sv.ketquasv.mon[i].gk2 * 0.3 + sv.ketquasv.mon[i].ck2 * 0.7;
		sv.ketquasv.mon[i].cn = (sv.ketquasv.mon[i].hk1 + sv.ketquasv.mon[i].hk2) / 2;
	}
	sv.ketquasv.tbm = 0;
	for (i = 1; i <= n; i++)
		sv.ketquasv.tbm += sv.ketquasv.mon[i].cn;
	sv.ketquasv.tbm = sv.ketquasv.tbm / n;
}
void nhapthongtin(sinhvien &sv, int i, fstream &tt, int &n)
{
	system("cls");
	scanf_s("%*c");
	printf("*********** Phan thong tin sinh vien ***********\n");
	printf("Sinh vien thu %d:\n", i);
	printf("Ho va ten     : "); gets_s(sv.ten);
	printf("MSSV          : "); gets_s(sv.mssv);
	printf("Dia chi       : "); gets_s(sv.diachi);
	printf("So dien thoai : "); gets_s(sv.sdt);
	printf("Lop hoc       : "); gets_s(sv.lop);
	printf("Nam sinh      : "); gets_s(sv.namsinh);
	printf("So  cmnd      : "); gets_s(sv.cmnd);
	printf("\n************ Phan diem thi sinh vien ***********\n");
	nhapdiem(sv, n);

}
void loadtt(sinhvien sv[], int &n, int m)
{
	fstream tt;
	tt.open("d:/thongtin.dat", ios::in | ios::binary);
	tt.read((char *)&n, sizeof(n));
	for (int i = 1; i <= n; i++) tt.read((char *)&sv[i], sizeof(sv[i]));
	tt.close();
}
void xuatdiem(sinhvien &sv, int n)
{
	printf("\t  gk1\t  ck1\t  hk1\t  gk2\t  ck2\t  hk2\t  tbm\n");
	for (int i = 1; i <= n; i++)
		printf("mon %d\t  %.1f\t  %.1f\t  %.1f\t  %.1f\t  %.1f\t  %.1f\t  %.1f\t\n", i, sv.ketquasv.mon[i].gk1, sv.ketquasv.mon[i].ck1, sv.ketquasv.mon[i].hk1, sv.ketquasv.mon[i].gk2, sv.ketquasv.mon[i].ck2, sv.ketquasv.mon[i].hk2, sv.ketquasv.mon[i].cn);
	printf("\n\n\t\tTrung binh mon ca nam: %.2f", sv.ketquasv.tbm);
}
void xuatthongtin(sinhvien &sv, int i, int n)
{
	system("cls");
	printf("\n****************** Phan thong tin sinh vien *****************\n");
	printf("Sinh vien thu %d:\n", i);
	printf("Ho va ten     : %s\n", sv.ten);
	printf("MSSV          : %s\n", sv.mssv);
	printf("So CMND       : %s\n", sv.cmnd);
	printf("Dia chi       : %s\n", sv.diachi);
	printf("So dien thoai : %s\n", sv.sdt);
	printf("Lop hoc       : %s\n", sv.lop);
	printf("Nam sinh      : %s\n", sv.namsinh);
	printf("\n******************* Phan diem thi sinh vien *****************\n");
	xuatdiem(sv, n);
	printf("\n\t\t\tXep Loai: ");
	if (sv.ketquasv.xeploai == 4) printf("Gioi");
	else if (sv.ketquasv.xeploai == 3) printf("Kha");
	else if (sv.ketquasv.xeploai == 2) printf("Trung Binh");
	else printf("Yeu");
	_getch();
}
void indiem(sinhvien &sv, int n, fstream &in)
{
	in << "\n\t\tGK 1\tCK 1\tHK 1\tGK 2\tCK 2\tHK 2\tTBM\n";
	for (int i = 1; i <= n; i++)
		in << "\tMon " << i << "\t\t" << sv.ketquasv.mon[i].gk1 << "\t" << sv.ketquasv.mon[i].ck1 << "\t" << sv.ketquasv.mon[i].hk1 << "\t" << sv.ketquasv.mon[i].gk2 << "\t" << sv.ketquasv.mon[i].ck2 << "\t" << sv.ketquasv.mon[i].hk2 << "\t" << sv.ketquasv.mon[i].cn << "\t\n";
	in << "\n\t\tTrung binh mon ca nam: " << sv.ketquasv.tbm;
}
void inthongtin(sinhvien &sv, int n)
{
	fstream in;
	in.open("d:/infile.doc", ios::out | ios::app);
	in << "\n\n************************ Phan Thong Tin Sinh Vien ***********************\n";
	in << "\n\t\tHo va ten\t\t\t: " << sv.ten;
	in << "\n\t\tSo CMND\t\t\t: " << sv.cmnd;
	in << "\n\t\tNam sinh\t\t\t: " << sv.namsinh;
	in << "\n\t\tDia chi\t\t\t: " << sv.diachi;
	in << "\n\t\tLop hoc\t\t\t: " << sv.lop;
	in << "\n\t\tMSSV\t\t\t\t: " << sv.mssv;
	in << "\n\t\tSo dien thoai\t\t: " << sv.sdt;
	in << "\n\n\n************************ Phan Diem Thi Sinh Vien ************************\n";
	indiem(sv, n, in);
	in << "\n\t\t\tXep Loai: ";
	if (sv.ketquasv.xeploai == 4) in << "Gioi";
	else if (sv.ketquasv.xeploai == 3) in << "Kha";
	else if (sv.ketquasv.xeploai == 2) in << "Trung Binh";
	else in << "Yeu";
	in << "\n\n=========================================================================\n";
	in << "=========================================================================\n";
	in.close();
}
void gotoxy(int x, int y)
{
	HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
	COORD position = { x, y };
	SetConsoleCursorPosition(hStdout, position);
}
void inbaocao(sinhvien sv[], int n, int somon, int &g, int &k, int &tb, int &y)
{
	loadtt(sv, n, somon);
	xeploai1(sv, n, somon, g, k, tb, y);
	fstream bc;
	bc.open("D:/BaoCao.doc", ios::out);
	bc << "\t\t\t  Cong Hoa Xa Hoi Chu Nghia Viet Nam\n\t\t\t\tDoc Lap - Tu Do - Hanh Phuc\n\t\t\t\t\t\t ***\n   \t\t\t\tBAN BAO CAO KET QUA HOC TAP";
	bc << "\n\nTen\t\t\t\tLop\t\t\tMSSV\t\t\tTBCN\tXL\n";
	for (int i = 1; i <= n; i++)
	{
		bc << sv[i].ten;
		for (int x = 3; x > strlen(sv[i].ten) / 10; x--) bc << "\t";
		bc << sv[i].lop << "\t\t" << sv[i].mssv << "\t\t" << sv[i].ketquasv.tbm << "\t";
		if (sv[i].ketquasv.xeploai == 4) bc << "Gioi\n";
		else if (sv[i].ketquasv.xeploai == 3) bc << "Kha\n";
		else if (sv[i].ketquasv.xeploai == 2) bc << "TB\n";
		else bc << "Yeu\n";
	}
	bc << "\n\tTong ket: \n\t+Gioi: " << g << "\tChiem: " << g * 100 / n << "%\n\t+Kha : " << k << "\tChiem: " << k * 100 / n << "%\n\t+TB  : " << tb << "\tChiem: " << tb * 100 / n << "%\n\t+Yeu : " << y << "\tChiem: " << y * 100 / n << "%\n";
	bc.close();
}
int timsv(sinhvien &sv, char tukhoa[])
{
	char s1[31];
	char s2[15];
	strcpy_s(s2, tukhoa);
	_strlwr_s(s2);
	int i = 0;
	while (i <= (strlen(sv.ten) - strlen(s2)))
	{
		strncpy_s(s1, sv.ten + i, strlen(s2));
		s1[strlen(s2) + 1] = '\0';
		_strlwr_s(s1);
		if (strcmp(s2, s1) == 0) break;
		i++;
	}
	if (i <= (strlen(sv.ten) - strlen(s2))) return 1;
	i = 0;
	if (strlen(s2) <= strlen(sv.mssv))
	{
		while (i <= (strlen(sv.mssv) - strlen(s2)))
		{
			strncpy_s(s1, sv.mssv + i, strlen(s2));
			s1[strlen(s2) + 1] = '\0';
			_strlwr_s(s1);
			if (strcmp(s2, s1) == 0) break;
			i++;
		}
		if (i <= (strlen(sv.mssv) - strlen(s2))) return 1;
	}
	return 0;
}
void xephang(sinhvien sv[], int &n, int somon, int stt[])
{
	int t, a=0;
	loadtt(sv, n, somon);
	for (int i = 1; i <= n; i++) stt[i] = i;
	for (int i = 1; i <= n; i++)
	{
		for (int j = 1; j <= n; j++)
		{
			if (sv[stt[i]].ketquasv.tbm > sv[stt[j]].ketquasv.tbm)
			{
				t = stt[i];
				stt[i] = stt[j];
				stt[j] = t;
			}
		}
	}
}
void suathongtin(int n, int somon, int i)
{
	fstream tt;
	sinhvien sv[11];
	loadtt(sv, n, somon);
	nhapthongtin(sv[i], i, tt, somon);
	cout << "\nSave (s/n)";
	int luachon;
	luachon = _getch();
	if (luachon == 83 || luachon == 115)
	{
		tt.open("d:/thongtin.dat", ios::out | ios::binary);
		tt.write((char *)&n, sizeof(n));
		for (i = 1; i <= n; i++) tt.write((char *)&sv[i], sizeof(sv[i]));
		tt.flush();
		tt.close();
	}
	else loadtt(sv, n, somon);

}
int admin()
{
	char pass[15];
	int i = 0, dem = 0;
	do
	{
		i = 0;
		system("cls");
		cout << "        ******** NHAP PASS ********\n" << "                 ";
		while ((pass[i] = _getch()) != 13 && i++ < 13) cout << "*";
		pass[i] = '\0';
		if (strcmp(pass, "HuuTho") == 0) return 1;
		else dem++;
	} while (dem < 3);
	if (dem == 3) return 0;
}
void danhsachsv(sinhvien sv[], int somon)
{
	int n, t, a =0;
	int stt[11];
	fstream tt;
	loadtt(sv, n, somon);
	tt.open("d:/thongtin.dat", ios::in | ios::binary);
	for (int x = 1; x <= n; x++) stt[x] = x;
	for (int i = 1; i <= n; i++)
	{
		for (int j = 1; j <= n; j++)
		{
			if (i == j) continue;
			if (strcmp(sv[stt[i]].ten, sv[stt[j]].ten) > 1)
			{
				t = stt[i];
				stt[i] = stt[j];
				stt[j] = t;
			}
		}
	}
	do
	{
		system("cls");
		for (int i = 1; i <= n; i++) cout << "\n" << i << ". " << sv[stt[i]].ten;
		int i;

		i = _getch();
		i = i - 48;
		if (i <= n && i > 0)
		{
			xeploai1(sv, n, somon, a, a, a, a);
			xuatthongtin(sv[stt[i]], stt[i], somon);
			cout << "\n\n\t\tEDIT (y/n) ?";
			if (_getch() == 121 && n != 0) if (admin() == 1)
			{
				tt.close();
				suathongtin(n, somon, i);
			}
			else tt.close();
		}
	} while (_getch() != 27);
}
void xoatt(sinhvien sv[], int &n, int j, int somon)
{
	fstream tt;
	int i;
	loadtt(sv, n, somon);
	tt.open("d:/thongtin.dat", ios::out | ios::binary);
	n = n - 1;
	tt.write((char *)&n, sizeof(n));
	for (i = 1; i <= n + 1; i++)
	{
		if (i != j) tt.write((char *)&sv[i], sizeof(sv[i]));
	}
	tt.flush();
	tt.close();
}
int xeploai(sinhvien &sv, int n, int somon, int &gioi, int &kha, int &tb, int &yeu)
{
	int min = 10;
	for (int i = 1; i <= somon; i++)
	{
		if (min > sv.ketquasv.mon[i].hk1) min = sv.ketquasv.mon[i].hk1;
		if (min > sv.ketquasv.mon[i].hk2) min = sv.ketquasv.mon[i].hk2;
	}
	if (sv.ketquasv.tbm < 5) sv.ketquasv.xeploai = 1;
	if (sv.ketquasv.tbm >= 5) sv.ketquasv.xeploai = 2;
	if (sv.ketquasv.tbm >= 6.5 && min < 5) sv.ketquasv.xeploai = 2;
	if (sv.ketquasv.tbm >= 6.5 && min >= 5) sv.ketquasv.xeploai = 3;
	if (sv.ketquasv.tbm >= 8 && min >= 5) sv.ketquasv.xeploai = 3;
	if (sv.ketquasv.tbm >= 8 && min >= 6.5) sv.ketquasv.xeploai = 4;
	if (sv.ketquasv.xeploai == 1) yeu++; else if (sv.ketquasv.xeploai == 2) tb++;  else if (sv.ketquasv.xeploai == 3) kha++; else if (sv.ketquasv.xeploai == 4) gioi++;
	return 1;
}
void xeploai1(sinhvien sv[], int n, int somon, int &gioi, int &kha, int &tb, int &yeu)
{
	gioi = 0; kha = 0; tb = 0; yeu = 0;
	for (int x = 1; x <= n; x++)
		xeploai(sv[x], n, somon, gioi, kha, tb, yeu);
}
void menu1()
{
	printf("\n+***************************** Ghi Thong Tin ****************************+");
	printf("\n+------------------------------------------------------------------------+");
	printf("\n+                     1. Ghi thong tin chi tiet                          +");
	printf("\n+                     2. Ghi bao cao hoc tap lop                         +");
	printf("\n+------------------------------------------------------------------------+");
	printf("\n+                     ESC. Thoat                                         +");
	printf("\n+------------------------------------------------------------------------+\n");
}
void menu()
{
	printf("\n+*************************** Quan Ly Sinh Vien **************************+");
	printf("\n+------------------------------------------------------------------------+");
	printf("\n+                     1. Bo sung du lieu ve sinh vien                    +");
	printf("\n+                     2. Ghi thong tin ra file                           +");
	printf("\n+                     3. Load thong tin tren bo nho                      +");
	printf("\n+                     4. Tim sv bang tu khoa                             +");
	printf("\n+                     5. Danh sach Sv                                    +");
	printf("\n+                     6. Xep hang sinh vien                              +");
	printf("\n+                     7. De suat hoc bong                                +");
	printf("\n+                     8. Sua thong tin sinh vien                         +");
	printf("\n+                     9. Xoa thong tin sinh vien                         +");
	printf("\n+------------------------------------------------------------------------+");
	printf("\n+                     ESC. Thoat                                         +");
	printf("\n+------------------------------------------------------------------------+\n");
}
void main()
{
	int g = 0, k = 0, tb = 0, y = 0;
	sinhvien sv[11];
	int sokt = 0, sodong = 1;
	int i, n = 0, somon = 6, stt[10];
	int c, luachon; int *mang;
	fstream  tt, d, hb;
	int dem = 0, dem1;
	do
	{
		loadtt(sv, n, somon);
		int dem = 0, sothongtin;
		system("cls");
		menu();
		switch (_getch())
		{
		case 49:
			tt.open("D:/thongtin.dat", ios::out | ios::binary);
			system("cls");
			printf("So sinh vien can nhap thong tin: ");
			scanf_s("%d.\n", &c);
			n = n + c;
			tt.write((char *)&n, sizeof(n));
			for (i = n - c + 1; i <= n; i++)
				nhapthongtin(sv[i], i, tt, somon);
			for (i = 1; i <= n; i++) tt.write((char *)&sv[i], sizeof(sv[i]));
			tt.flush();
			tt.close();
			xeploai1(sv, n, somon, g, k, tb, y);
			for (i = 1; i <= n; i++)
				xuatthongtin(sv[i], i, somon);
			break;
		case 50:
			xeploai1(sv, n, somon, g, k, tb, y);
			do
			{
				system("cls");
				menu1();
				do
				{
					luachon = _getch();
				} while (luachon != 49 && luachon != 50 && luachon != 27);
				switch (luachon)
				{
				case 49:
					for (i = 1; i <= n; i++) inthongtin(sv[i], somon);
					cout << "successful " << "\nOpen file...";
					system("d:/infile.doc");
					break;
				case 50:
					inbaocao(sv, n, somon, g, k, tb, y);
					cout << "successful " << "\nOpen file...";
					system("d:/BaoCao.doc");
					break;
				default:
					break;
				}
				break;
			} while (_getch() != 27);
			break;
		case 51:
			xeploai1(sv, n, somon, g, k, tb, y);
			for (i = 1; i <= n; i++)
				xuatthongtin(sv[i], i, somon);
			break;
		case 52:
			char tukhoa[15];
			c = 0;
			system("cls");
			cout << "******** Nhap tu khoa tim kiem ********\n";
			gets_s(tukhoa);
			cout << "\n***** Ket qua tim kiem cho: '" << tukhoa << "' *****\n";
			for (i = 1; i <= n; i++) if (timsv(sv[i], tukhoa) == 1) cout << "\n" << i << ". " << sv[i].ten << "\tMSSV: " << sv[i].mssv;
			break;
		case 53:
			system("cls");
			xeploai1(sv, n, somon, g, k, tb, y);
			cout << "******** Danh sach: ********\n";
			danhsachsv(sv, somon);
			break;
		case 54:
			system("cls");
			cout << "******** Xep Hang: ********\n";
			xephang(sv, n, somon, stt);
			do
			{
				system("cls");
				for (int i = 1; i <= n; i++) cout << i << "." << sv[stt[i]].ten << "\t\tDat: " << sv[stt[i]].ketquasv.tbm << "\n";
				int i;
				cout << "\nNhap vi thu tren bang xep hang ";
				i = _getch();
				i = i - 48;
				xeploai1(sv, n, somon, g, k, tb, y);
				if (i > 0 && i <= n) xuatthongtin(sv[stt[i]], stt[i], somon);
			} while (_getch() != 27);
			break;
		case 55:
			dem1 = 1;
			xeploai1(sv, n, somon, g, k, tb, y);
			xephang(sv, n, somon, stt);
			hb.open("D:/Hocbong.doc", ios::out);
			hb << "\t\t\t  Cong Hoa Xa Hoi Chu Nghia Viet Nam\n\t\t\t\tDoc Lap - Tu Do - Hanh Phuc\n\t\t\t\t\t\t ***\n   \t\t\t\t DANH SACH DE SUAT HOC BONG\n\n";
			hb << "\n\nTen\t\t\t\tLop\t\t\tMSSV\t\t\tTBCN\n";
			while (10 * dem1 < n || dem1 == 1) //rang buoc dieu kien in it nhat 1 nguoi trong truong hop so sv < 10
			{
				if (sv[stt[dem1]].ketquasv.tbm >= 7)
				{
					hb << sv[stt[dem1]].ten << "\t\t" << sv[stt[dem1]].lop << "\t\t" << sv[stt[dem1]].mssv << "\t\t" << sv[stt[dem1]].ketquasv.tbm << "\n";
					dem1++;
				}
				else break;
			}
			hb << "\n\n\t\tCo " << dem1 - 1 << " tren tong so " << n << " sinh vien\n";
			hb.close();
			system("D:/Hocbong.doc");
			cout << "Opening...";
			break;
		case 56:
			int a;
			do
			{
				system("cls");
				cout << "Co " << n << "thong tin duoc luu tru" << "\nBan muon chinh sua thong tin bao nhieu nguoi: ";
				scanf_s("%d.\n", &a);
			} while (a > n);
			cout << "Nhap stt nhung nguoi ban muon sua tt (stt trong muc load thong tin)\n";
			mang = new int[a];
			for (int x = 1; x <= a; x++)
			{
				cout << "\nstt nguoi thu  " << x << " ";
				cin >> mang[x];
				if (mang[x] > n) x--;
				cout << "\n";
			}
			if (admin() == 1) for (int x = 1; x <= a; x++) suathongtin(n, somon, mang[x]);
			xeploai1(sv, n, somon, g, k, tb, y);
			break;
		case 57:
			do
			{
				system("cls");
				cout << "Co " << n << "thong tin duoc luu tru" << "\nBan muon xoa thong tin bao nhieu nguoi: ";
				scanf_s("%d.\n", &a);
			} while (a > n);
			cout << "Nhap stt nhung nguoi ban muon xoa (stt trong muc load thong tin)\n";
			mang = new int[a];
			for (int x = 1; x <= a; x++)
			{
				cout << "\nstt nguoi thu  " << x << " ";
				cin >> mang[x];
				if (mang[x] > n) x--;
				cout << "\n";
			}
			if (admin() == 1) for (int x = 1; x <= a; x++) xoatt(sv, n, mang[x], somon);
			loadtt(sv, n, somon);
			xeploai1(sv, n, somon, g, k, tb, y);
			break;
		default:
			break;
		}
	} while (_getch() != 27);
}