#include <iostream.h>
#include <conio.h>
int main()
{   char n;
    char s[10];

    while (1)
    {
     cin>>s;
     if ( *s=='b')
     {
     cout<<s;
     }
    cout<<"do you want 2 cuntinue?";
    cin>>n;
    if (n=='n')
    {
     break;
    }
   }
getch();
return 0;
}