The code does not refer to the required class, how to fix it?

Question

C++ / C#

In the code, as far as I understand, the error is such that it refers to the first written default class, respectively, it does not find functions from other classes that I refer to and throws an error. If suddenly I'm wrong, here is a list of errors.

In function 'int main()':
[Error] conflicting declaration 'Reader symbol [500]'
[Note] previous declaration as 'Bibl symbol [500]'
[Error] conflicting declaration 'Order symbol [500]'
[Note] previous declaration as 'Bibl symbol [500]'
[Error] 'class Bibl' has no member named 'Add_Reader'
[Error] 'class Bibl' has no member named 'Add_Order'
[Error] 'class Bibl' has no member named 'GetReader'
[Error] 'class Bibl' has no member named 'GetOrder'

Here is the code

#include <iostream>
#include <string>
#include <windows.h>
using namespace std;

class Bibl {
private: 
  string Bibl_name, PIB, adres, otdel; int nomer; 
public:
  void Add_Bibl(string a, string b, string c, int d, string e) {
    Bibl_name = a;
    PIB = b;
    adres = c;
    nomer = d;
    otdel = e;
  }
  void GetBibl() {
    cout << "Librarian name: \t" << Bibl_name << endl << "Full name: \t" << PIB << endl << "Address: \t" << adres << endl << "Phone number: \t" << nomer << endl << "The Department: " << otdel << endl;
    } 
  } ;

class Reader {
private:
  string Bibl_name_r, PIB_r; int nomer_r, zakaz;
public:
  void Add_Reader(string f, string g, int h, int j) {
    Bibl_name_r = f;
    PIB_r = g;
    nomer_r = h;
    zakaz = j;
  }
  void GetReader() {
    cout << "Librarian name: \t" << Bibl_name_r << endl << "Full name: \t" << PIB_r << endl << "Phone number: \t" << nomer_r << endl << "Order number: \t" << zakaz << endl;
  }
} ;

class Order {
private:
  string book, autor, time1, time2; int year;
public:
  void Add_Order(string k, string l, string m, string n, int o) {
    book = k;
    autor = l;
    time1 = m;
    time2 = n;
    year = o;
  }
  void GetOrder() {
    cout << "Book name: \t" << book << endl << "Autor name: \t" << autor << endl << "Year of issue: \t" << year << endl << "Delivery time to the client: \t" << time1 << endl << "Hold time" << time2 << endl;
  }
} ;


int main() {
  string a, b, c, e; int d;
  string f, g; int h, j;
  string k, l, m, n; int o;
  bool soft = true;
  short menu, Bibl_kol, Reader_kol, Order_kol;
  Bibl symbol[500];
  Reader symbol[500];
  Order symbol[500];
while (soft == true) {
  system ("cls");
  cout << "\t 1) Dobavit bibliotekar" << endl << "\t 2) Dobavit chitatel" << endl << "\t 3) Dobavit zakaz" << endl << "\t 4) Spisok bibl" << endl << "\t 5) Spisok reader" << endl << "\t 6) Spisok zakazov" << endl;
  cin >> menu;

  if (menu == 1) {
    system ("cls");
    cout << ("Skolko bibliotekar dobavit? "); cin >> Bibl_kol;
    for (int i = 0; i < Bibl_kol; i++) {
        system ("cls");

        cout << "Librarian name: "; cin >> a, cout << endl;
        cout << "Full name: "; cin >> b; cout << endl;
        cout << "Address: "; cin >> c; cout << endl;
        cout << "Phone number: "; cin >> d; cout << endl;
        cout << "The Department: "; cin >> e; cout << endl;
        symbol[i].Add_Bibl(a, b, c, d, e);
      }
      cout << "Dobavleno." << endl;
      Sleep (3000);
  }
  if (menu == 2) {
    system ("cls");
    cout << ("Skolko reader dobavit? "); cin >> Reader_kol;
    for (int i = 0; i < Reader_kol; i++) {
        system ("cls");

        cout << "Librarian name: "; cin >> f, cout << endl;
        cout << "Full name: "; cin >> g; cout << endl;
        cout << "Phone number: "; cin >> h; cout << endl;
        cout << "Order name: "; cin >> j; cout << endl;
        symbol[i].Add_Reader(f, g, h, j);
      }
      cout << "Dobavleno." << endl;
      Sleep (3000);
  }
  if (menu == 3) {
    system ("cls");
    cout << ("Skolko zakazov dobavit? "); cin >> Order_kol;
    for (int i = 0; i < Order_kol; i++) {
        system ("cls");

        cout << "Book name: "; cin >> k, cout << endl;
        cout << "Autor name: "; cin >> l; cout << endl;
        cout << "Year of issue: "; cin >> o; cout << endl;
        cout << "Delivery time to the client: "; cin >> m; cout << endl;
        cout << "Hold time: "; cin >> n, cout << endl;
        symbol[i].Add_Order(k, l, o, m, n);
      }
      cout << "Dobavleno." << endl;
      Sleep (3000);
  }
  if (menu == 4) { 
         	system ("cls");
         	for (int i = 0; i < Bibl_kol; i++) {
         		symbol[i].GetBibl();
         		Sleep(1000);
         	}
         	Sleep (3000);
         }
    if (menu == 5) { 
         	system ("cls");
         	for (int i = 0; i < Reader_kol; i++) {
         		symbol[i].GetReader();
         		Sleep(1000);
         	}
         	Sleep (3000);
         }
    if (menu == 6) { 
         	system ("cls");
         	for (int i = 0; i < Order_kol; i++) {
         		symbol[i].GetOrder();
         		Sleep(1000);
         	}
         	Sleep (3000);
         }
    }
return 0; 
}

Answer 1

Variables

Bibl symbol[500];
  Reader symbol[500];
  Order symbol[500];

must be named differently.