Здавейте.Имам проблем със Currency Converter на C++.

Това е кода и ми дава 60/100 незнайно (поне за мен) защо.

Благодаря предварително.

#include <iostream>
#include <string>
#include <iomanip>

using namespace std;

int main() {
   cout.precision(2);
   cout << fixed;
   double levove = 1;
   double dolari = 1.79549;
   double evro = 1.95583;
   double payndove = 2.53405;

   string BGN = "BGN";
   string USD = "USD";
   string EUR = "EUR";
   string BGP = "BGP";
   string input_money;
   string new_currency;
   double ammount;
   cin >> ammount;
   cin >> input_money;
   cin >> new_currency;
   if (input_money == BGN) {
       ammount = ammount * levove;
   }
   else if (input_money == USD) {
       ammount = ammount * dolari;
   }
   else if (input_money == EUR ) {

ammount = ammount * evro;
   }
   else if (input_money == BGP) {
       ammount = ammount * payndove;
   }

   if (new_currency == BGN) {
       ammount = ammount / levove;
       cout << ammount << endl;
   }
   else if (new_currency == USD) {
       ammount = ammount / dolari;
       cout << ammount << endl;
   }
   else if (new_currency == EUR) {
       ammount = ammount / evro;
       cout << ammount << endl;
   }

else if (new_currency == BGP) {
       ammount = ammount / payndove;
       cout << ammount << endl;
   }

return 0;
}