"Scrieti in C++" va rog!

#include <iostream>
using namespace std;
int main(){
unsigned n,k,c,p;
cin >> n >> k;
p=1;
while(n>0 && k>0){
c=n%10;
if(c%2==1)p=p*c;
n=n/10;
k=k-1;
}
cout << p;
}