705.cpp

C++实训教程

//705.CPP demo use stream format
#include <iostream.h>
main(void)
{
  cout.setf(ios::showpos);
  cout.setf(ios::scientific);
  cout << 123 << "  "<< 123.456 << endl;

  cout.precision(3);// two digits after decimal point
  cout.width(10);// in a field of ten characters
  cout << 123 << "  "<< 123.456 << endl;;
  cout.fill('#');// fill using#
  cout.width(10);// in a field of ten characters
  cout.unsetf(ios::scientific|ios::showpos);
  cout.precision(5);// two digits after decimal point
  cout << 123 << "  " << 123.456;

  return 0;
}
/*-
+123  +1.234560e+02
      +123  +1.235e+02
#######123  123.46

*/