Răspuns:
#include <iostream>
using namespace std;
bool prim(int x)
{
int d;
if(x==1)
return 0;
if(x%2==0 && x!=2)
return 0;
for(d=3;d*d<=x;d=d+2)
if(x%d==0)
return 0;
return 1;
}
int main()
{
int x=-1;
while(x!=0)
{
cin>>x;
if(prim(x%10))
cout<<x<<" ";
}
return 0;
}
sper ca am ajutat:))