Я могу запустить этот код, но не могу выбрать, в какой валюте и т. д. Пожалуйста, помогите мне решить эту проблему!

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#include <iostream>
#include <cstdlib>
#include <cmath>

using namespace std;

int main ()
{
    int A,B,C,D,E,F,bndollar,usdollar,eurodollar,myrdollar,bnd,usd,eur,myr,currency,n,N,y,Y;
    char choice;
    double number;
    while (choice);
    
    
    {
         
    cout << "CURRENCY CONVERTER\n" <<endl;
    cout << "Choose a foreign currency\n" <<endl;
	cout << "1. BND to USD\n"  <<endl;
	cout << "2. USD to BND\n"  <<endl;
	cout << "3. BND to EUR\n"  <<endl;
	cout << "4. EUR to BND\n"  <<endl;
	cout << "5. BND to MYR\n"  <<endl;	
	cout << "6. MYR to BND\n"  <<endl;
	{
    cout << "\nPlease enter the number of the currency you want to convert: ";
    cin >> currency;

    }
    if (choice == 1)
    {  
       cout << "Please enter the amount of BND you would like to convert to USD: ";
       cin >> bndollar;
       cout << "\nYou have entered " << bndollar << "bnd is equal to " << bndollar*0.714950 << "usd." <<endl; 
    }
    
    else if (choice == 2)
    {
         cout << "Please enter the amount of USD you would like to convert to BND: ";
   	     cin >> usdollar;
         cout << "\nYou have entered " << usdollar << "usd is equal to " << usdollar*1.39870 << "usd." <<endl;
    }   
       
    else if (choice == 3)
    {
         cout << "Please enter the amount of BND you would like to convert to EUR: ";
         cin >> bndollar;
         cout << "\nYou have entered " << bndollar << "bnd is equal to " << bndollar*0.661654 << "bnd." <<endl;	    
    }         
       
       
    else if (choice == 4)
    {
         cout << "Please enter the amount of EUR you would like to convert to BND: ";
     	 cin >> eurodollar;
         cout << "\nYou have entered " << eurodollar << "euro is equal to " << eurodollar*1.51136 << "euro." <<endl;	  
    }         
       
    else if (choice == 5)
    {
          cout << "Please enter the amount of BND you would like to convert to MYR: ";
   	      cin >> bndollar;
          cout << "\nYou have entered " << bndollar << "bnd is equal to " << bndollar*3.16401 << "bnd." <<endl;	   
    }   
          
    else if (choice == 6)
    {
            cout << "Please enter the amount of MYR you would like to convert to BND: ";
            cin >> myrdollar;
            cout << "\nYou have entered " << myrdollar << "myr is equal to " << bndollar*0.316055 << "myr." <<endl;	
    }
    
 
    cout << "\n\n\n\nDo you wish to convert again? (Y/N) ";
    cin >> choice;
}

    if (choice != n && choice !=N)
    {
    cout << "\n\n\n\n\n\n\n\nThank You and Goodbye\n";
}
    
    {
   if (choice == y && choice == Y)
     
            cout << "\n";
     }

    system ("pause");
	return 0;  

}

Пожалуйста, помогите мне, в чем здесь проблема?

Что я уже пробовал:

Когда я пытаюсь запустить его, он становится таким:

КОНВЕРТЕР ВАЛЮТ

Выберите иностранную валюту

1. BND к доллару США

2. USD к BND

3. БНД евро

4. Евро для БНД

5. BND в мире

6. MYR to BND


Пожалуйста, введите номер валюты, которую вы хотите конвертировать: 1




Вы хотите снова обратиться? (Y/N) n








Спасибо и до свидания
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