#include<ostream.h>
#include<iomanip.h>
using namespace std;

int main() {
  cout << 123.456789 << endl
       << setw(9)    << 123.456789 << endl
       << setw(12)   << 123.456789 << endl;

  cout << setprecision (1) << 123.456789 << endl
       << setprecision (3) << 123.456789 << endl
       << setprecision (8) << 123.456789 << endl
       << setprecision (9) << 123.456789 << endl;

  cout << setbase( 8 )  << 100 << endl
       << setbase( 16 ) << 100 << endl ;

  cout << setfill( '.' ) << setw(10) << 123 << endl;
  return 0;
}