//ID : 19127640
//Name : Hoang Huu Giap
// Bai 12
#include <iostream>
#include <cstring>
using namespace std;
struct SinhVien {
	int ID;
	char FullName[50];
	float GPA;
	char Address[500];
	struct DoB {
		int year;
		int month;
		int day;
	}m;
};
void NhapThongTinSinhVien(SinhVien &a)
{
	cout << "ID:";
	cin >> a.ID;
	cin.ignore();
	cout << "Full Name :";
	cin.getline(a.FullName, 50);
	cout << "GPA: ";
	cin >> a.GPA;
	cin.ignore();
	cout << "Address :";
	cin.getline(a.Address, 500);
	cout << "Ngay thang nam sinh: ";
	cin >> a.m.day >> a.m.month >> a.m.year;
}
void XuatThongTinSinhVien(SinhVien a)
{
	cout << "Thong tin cua sinh vien la:" << endl;
	cout << "ID:" << a.ID; cout << endl;
	cout << "Full Name :" << a.FullName; cout << endl;
	cout << "GPA: " << a.GPA; cout << endl;
	cout << "Address :" << a.Address; cout << endl;
	cout << "Ngay thang nam sinh: " << a.m.day<<" " <<a.m.month<<" "<<a.m.year; cout << endl;
}
void XuatHovaTen(SinhVien a,char FullName[50])
{
	int j = 0, k = 0;
	char Ho[10], Ten[10];
	for (int i = 0; i < strlen(FullName); i++)
	{
		if (FullName[i] != 0 && FullName[i] != ' ')
		{
			Ho[j] = FullName[i];
			j++;
		}
		else break;
	}
	for (int i = strlen(FullName)-1; i >=0; i--)
	{
		if (FullName[i] != 0 && FullName[i] != ' ')
		{
			Ten[k] = FullName[i];
			k++;
		}
		else break;
	}
	Ho[j] = '\0';
	Ten[k] = '\0';
	cout << "First Name :" << Ho << endl;
	cout << "Last Name :" << _strrev(Ten) << endl;
}
void XuatThongTinTheoKieu(SinhVien a)
{
	cout << "Thong tin cua sinh vien la theo dinh dang cua de bai la:" << endl;
	cout << "ID:" << a.ID; cout << endl;
	XuatHovaTen(a,a.FullName);
	cout << "GPA: " << a.GPA; cout << endl;
	cout << "Address :" << a.Address; cout << endl;
	cout << "Ngay thang nam sinh: " << a.m.day << " " << a.m.month << " " << a.m.year; cout << endl;
}
void SoSanhID(SinhVien a,SinhVien b)
{
	if (a.ID == b.ID)
		cout << "2 sinh vien co ID giong nhau" << endl;
	else
		cout << "Hai sinh vien co ID khac nhau" << endl;
}
void SoSanhIDvaGPA(SinhVien a, SinhVien b)
{
	if (a.GPA == b.GPA)
	{
		if (a.ID == b.ID)
			cout << "2 sinh vien co GPA va ID giong nhau" << endl;
		else
			cout << "2 sinh vien co GPA bang nhau nhung ID khac nhau" << endl;
	}
	else
	{
		if (a.ID == b.ID)
			cout << "2 sinh vien co GPA khac nhau nhung ID giong nhau" << endl;
		else
			cout << "2 sinh vien co GPA va ID khac nhau" << endl;
	}
}
void SoSanhNamevaID(SinhVien a, SinhVien b)
{
	int giatri = strcmp(a.FullName, b.FullName);
	if (giatri ==0)
	{
		if (a.ID == b.ID)
			cout << "2 sinh vien co FullName va ID giong nhau" << endl;
		else
			cout << "2 sinh vien co FullName giong nhau nhung ID khac nhau" << endl;
	}
	else
	{
		if (a.ID == b.ID)
			cout << "2 sinh vien co FullName khac nhau nhung ID giong nhau" << endl;
		else
			cout << "2 sinh vien co FullName va ID khac nhau" << endl;
	}
}
void SoSanhFirstNamevaID(SinhVien a, SinhVien b)
{
	int j = 0;
	char Ho1[10];
	for (int i = 0; i < strlen(a.FullName); i++)
	{
		if (a.FullName[i] != 0 &&a.FullName[i] != ' ')
		{
			Ho1[j] = a.FullName[i];
			j++;
		}
		else break;
	}
	Ho1[j] = '\0';
	int k = 0;
	char Ho2[10];
	for (int i = 0; i < strlen(b.FullName); i++)
	{
		if (b.FullName[i] != 0 && b.FullName[i] != ' ')
		{
			Ho2[k] = b.FullName[i];
			k++;
		}
		else break;
	}
	Ho2[k] = '\0';
	int giatri = strcmp(Ho1, Ho2);
	if (giatri == 0)
	{
		{
			if (a.ID == b.ID)
				cout << "2 sinh vien co Ho va ID giong nhau" << endl;
			else
				cout << "2 sinh vien co Ho giong nhau nhung ID khac nhau" << endl;
		}
	}
	else
	{
		if (a.ID == b.ID)
			cout << "2 sinh vien co Ho khac nhau nhung ID giong nhau" << endl;
		else
			cout << "2 sinh vien co Ho va ID khac nhau" << endl;
	}
}
void SoSanhLastNamevaID(SinhVien a, SinhVien b)
{
	int j = 0;
	char Ten1[10];
	for (int i = strlen(a.FullName)-1; i>=0; i--)
	{
		if (a.FullName[i] != 0 && a.FullName[i] != ' ')
		{
			Ten1[j] = a.FullName[i];
			j++;
		}
		else break;
	}
	Ten1[j] = '\0';
	int k = 0;
	char Ten2[10];
	for (int i = strlen(b.FullName); i >=0; i--)
	{
		if (b.FullName[i] != 0 && b.FullName[i] != ' ')
		{
			Ten2[k] = b.FullName[i];
			k++;
		}
		else break;
	}
	Ten2[k] = '\0';
	int giatri = strcmp(_strrev(Ten1),_strrev(Ten2));
	if (giatri == 0)
	{
		{
			if (a.ID == b.ID)
				cout << "2 sinh vien co Ten va ID giong nhau" << endl;
			else
				cout << "2 sinh vien co Ten giong nhau nhung ID khac nhau" << endl;
		}
	}
	else
	{
		if (a.ID == b.ID)
			cout << "2 sinh vien co Ten khac nhau nhung ID giong nhau" << endl;
		else
			cout << "2 sinh vien co Ten va ID khac nhau" << endl;
	}
}
void SoSanhDoBvaID(SinhVien a, SinhVien b)
{
	if (a.m.year == b.m.year&& a.m.month == b.m.month&& a.m.day == b.m.day)
	{
		if (a.ID == b.ID)
			cout << "2 sinh vien co DoB va ID giong nhau" << endl;
		else
			cout << "2 sinh vien co DoB bang nhau nhung ID khac nhau" << endl;
	}
	else
	{
		if (a.ID == b.ID)
			cout << "2 sinh vien co DoB khac nhau nhung ID giong nhau" << endl;
		else
			cout << "2 sinh vien co DoB va ID khac nhau" << endl;
	}
}
int main()
{
	SinhVien x,y;
	cout << "Nhap thong tin sinh vien thu nhat:" << endl;
	NhapThongTinSinhVien(x);
	XuatThongTinSinhVien(x);
	cout << "Nhap thong tin cua sinh vien thu 2:" << endl;
	NhapThongTinSinhVien(y);
	XuatThongTinSinhVien(y);
	cout << "==================Bang chuc nang==================" << endl;
	cout << "1. Xuat thong tin sinh vien thu nhat theo dinh dang" << endl;
	cout << "2. So sanh 2 sinh vien bang ID" << endl;
	cout << "3. So sanh 2 sinh vien bang GPA va ID" << endl;
	cout << "4. So sanh 2 sinh vien bang FullName va ID" << endl;
	cout << "5. So sanh 2 sinh vien bang Ho va ID" << endl;
	cout << "6. So sanh 2 sinh vien bang Ten va ID" << endl;
	cout << "7. So sanh 2 sinh vien bang DoB va ID" << endl;
	cout << "====================================================" << endl;
	int phimso;
	do {
		cout << "Nhap chuc nang:";
		cin >> phimso;
		switch (phimso)
		{
		case 1:XuatThongTinTheoKieu(x); break;
		case 2:SoSanhID(x, y); break;
		case 3:SoSanhIDvaGPA(x, y); break;
		case 4:SoSanhNamevaID(x, y); break;
		case 5:SoSanhFirstNamevaID(x, y); break;
		case 6:SoSanhLastNamevaID(x, y); break;
		case 7:SoSanhDoBvaID(x, y); break;
		default: break;
		}
	} while (phimso>0&&phimso<8);
	return 1;
}