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#include <bits/stdc++.h>
using namespace std;

struct MedicalEquipment
{
   string type;
   string ngaythang;
   string ten;
   int soluong;
   int dongia;
};
MedicalEquipment ThietBi[100];
int so_luong = 0;
//=====================================
void clr()
{
   system("cls");
}
//=====================================
void spau()
{
   system("pause");
}
//=====================================

void readdata()
{

ifstream file;
   file.open("data.txt", ios::app);
   int i = 0;
   while (!file.eof())
   {
      file >> ThietBi[i].type >> ThietBi[i].ngaythang >> ThietBi[i].ten >> ThietBi[i].soluong >> ThietBi[i].dongia;
      i++;
   }
   so_luong = i;
   file.close();
}
//=====================================
void writedata(int i)
{
   // i la vi tri thiet bi
   ofstream file;
   file.open("data.txt", ios::app);
   file << ThietBi[i].type << '\n'
        << ThietBi[i].ngaythang << '\n'
        << ThietBi[i].ten << '\n'
        << ThietBi[i].soluong << '\n'
        << ThietBi[i].dongia << '\n';
   file.close();
   so_luong++;
}
//=====================================
string get_current_date()
{
   // lấy thời gian hiện tại
   time_t now = time(nullptr);
   tm *local_time = localtime(&now);

// truy xuất ngày tháng năm
   int day = local_time->tm_mday;
   int month = local_time->tm_mon + 1;    // tm_mon: 0-11
   int year = local_time->tm_year + 1900; // tm_year: số năm kể từ 1900

// chuyển đổi sang định dạng string
   string date_str = to_string(day) + "/" + to_string(month) + "/" + to_string(year);

return date_str;
}

//=====================================
void nhaphang()
{
   int soloaithietbi, i;
   cout << "\nSo loai thiet bi nhap vao: ";
   cin >> soloaithietbi;
   for (i = 0; i < soloaithietbi; i++)
   {
      ThietBi[i + so_luong].type = "nhap";
      ThietBi[i + so_luong].ngaythang = get_current_date();
      cout << "\nTen thiet bi: ";
      cin >> ThietBi[i + so_luong].ten;
      cout << "So luong: ";
      cin >> ThietBi[i + so_luong].soluong;
      cout << "Don gia: ";
      cin >> ThietBi[i + so_luong].dongia;
      writedata(i + so_luong);
   }
   //   readdata();
   //    so_luong+=soloaithietbi;
}
//=====================================
void xuathang()
{
   int soloaithietbi, i;
   cout << "\nSo loai thiet bi xuat ra: ";
   cin >> soloaithietbi;
   for (i = 0; i < soloaithietbi; i++)
   {
      ThietBi[i + so_luong].type = "xuat";
      ThietBi[i + so_luong].ngaythang = get_current_date();
      cout << "Ten thiet bi: ";
      cin >> ThietBi[i + so_luong].ten;
      cout << "So luong: ";
      cin >> ThietBi[i + so_luong].soluong;
      cout << "Don gia: ";
      cin >> ThietBi[i + so_luong].dongia;
      writedata(i + so_luong);
   }
   //   so_luong+=soloaithietbi;
}
void timkiem_lsnhap()
{
   int n, dem = 0;
   cout << "Ban muon tim kiem bang gi:\n";
   cout << "1.Ngay nhap hang:\n";
   cout << "2.Ten thiet bi:\n";
   cout << "Vui long chon: ";
   cin >> n;
   switch (n)
   {
   case 1:
   {
      cout << "Nhap ngay: ";
      string date;
      fflush(stdin);
      cin >> date;
      for (int i = 0; i < so_luong; i++)
      {
         if (date == ThietBi[i].ngaythang && ThietBi[i].type == "nhap")
         {
            cout << "\nNgay: " << ThietBi[i].ngaythang << "Ten: " << ThietBi[i].ten << "\nSo luong: " << ThietBi[i].soluong << "\nDon gia:" << ThietBi[i].dongia << "\n";
            dem++;
         }
      }
      if (dem == 0)
      {
         cout << "Khong co lich su\n";
      }
      spau();
   }
   break;
   case 2:
   {
      cout << "Nhap ten thiet bi: ";
      string ten_thietbi;
      fflush(stdin);
      cin >> ten_thietbi;
      for (int i = 0; i < so_luong; i++)
      {
         if (ten_thietbi == ThietBi[i].ten && ThietBi[i].type == "nhap")
         {
            cout << "ngay: " << ThietBi[i].ngaythang << "\nSo luong: " << ThietBi[i].soluong << "\nDon gia:" << ThietBi[i].dongia << "\n\n";
            dem++;
         }
      }
      if (dem == 0)
      {
         cout << "Khong co lich su\n";
      }
      spau();
   }
   break;
   default:
      break;
   }
}
//=====================================
void timkiem_lsxuat()
{
   int n, dem = 0;
   cout << "Ban muon tim kiem bang gi:\n";
   cout << "1.Ngay nhap hang:\n";
   cout << "2.Ten thiet bi:\n";
   cout << "Vui long chon: ";
   cin >> n;
   switch (n)
   {
   case 1:
   {
      cout << "Nhap ngay: ";
      string date;
      fflush(stdin);
      cin >> date;
      for (int i = 0; i < so_luong; i++)
      {
         if (date == ThietBi[i].ngaythang && ThietBi[i].type == "xuat")
         {
            cout << "Ten: " << ThietBi[i].ten << "\nSo luong: " << ThietBi[i].soluong << "\nDon gia:" << ThietBi[i].dongia << "\n\n";
            dem++;
         }
      }
      if (dem == 0)
      {
         cout << "Khong co lich su\n";
      }
      spau();
   }
   break;
   case 2:
   {
      cout << "Nhap ten thiet bi: ";
      string ten_thietbi;
      fflush(stdin);
      cin >> ten_thietbi;
      for (int i = 0; i < so_luong; i++)
      {
         if (ten_thietbi == ThietBi[i].ten && ThietBi[i].type == "xuat")
         {
            cout << "Ngay: " << ThietBi[i].ngaythang << "\nSo luong: " << ThietBi[i].soluong << "\nDon gia:" << ThietBi[i].dongia << "\n\n";
            dem++;
         }
      }
      if (dem == 0)
      {
         cout << "Khong co lich su\n";
      }
      spau();
   }
   break;
   default:
      break;
   }
}
//=====================================
void timkiem_soluong()
{
   int t = 0;
   string tenthietbi;
   cout << "Ten thiet bi ban can tim la: ";
   // fflush(stdin);
   cin >> tenthietbi;
   for (int i = 0; i < so_luong; i++)
   {
      if (ThietBi[i].ten == tenthietbi)
      {
         if (ThietBi[i].type == "nhap")
         {
            t += ThietBi[i].soluong;
         }
         else
         {
            t -= ThietBi[i].soluong;
         }
      }
   }

if (t != 0)
   {
      cout << "So " << tenthietbi << " con lai: " << t << "\n\n";
   }
   else
   {
      cout << "Khong co thiet bi";
   }
   spau();
}
//=====================================
void timkiem()
{
   int n;
   cout << "Ban muon tim kiem gi:\n";
   cout << "1, Lich su nhap hang.\n";
   cout << "2, Lich su xuat hang.\n";
   cout << "3, So luong hang con cua thiet bi.\n";
   cout << "Vui long chon: ";
   cin >> n;
   switch (n)
   {
   case 1:
      timkiem_lsnhap();
      break;
   case 2:
      timkiem_lsxuat();
      break;
   case 3:
      timkiem_soluong();
      break;
   default:
      break;
   }
}
//=====================================
void menu()
{
   int luachon;
   cout << "                 QUAN LI KHO THIET BI Y TE                \n";
   cout << "1. Nhap hang vao kho.\n";
   cout << "2. Xuat hang ra kho.\n";
   cout << "3. Tim kiem.\n";
   cout << "4. Thoat.\n";
   cout << "Vui long chon: ";
   cin >> luachon;
   switch (luachon)
   {
   case 1:

nhaphang();
      break;
   case 2:
      xuathang();
      break;
   case 3:
      timkiem();
      break;
   case 4:
      exit(0);
      break;
   default:
      cout << "Error\n";
      spau();
      break;
   }
}

int main()
{
   readdata();
   while (1)
   {
      clr();
      menu();
   };
   return 0;
}

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