Systemy liczbowe zamiana

//systemy liczbowe zamiana
#include <iostream>
using namespace std;


void zamiana(long long n, int p)
{if(n>0)
{zamiana(n/p,p)

switch

case 10:
	cout<<"A";
	break;

case 11:
	cout<<"B";
	break;

case 12:
	cout<<"C";
	break;

case 13:
	cout<<"D";
	break;

case 14:
	cout<<"E";
	break;

case 15:
	cout<<"F";
	break;

}

}

int main(){
	int p;
	long long n;
	cout<<"podaj liczbe i podstawe systemu"
	cin>>n>>p;
	cout<<"Liczba"<<n<<"w systemie"<<p<<": ";

	if(n==0)
	cout<<0;
	else
	zamiana(n,p)





	return 0;
}