Progress

    1980: C
    printf ("% 10.2f", x);

    1988: C ++
    cout << setw (10) << setprecision (2) << showpoint << x;

    1996: Java
    java.text.NumberFormat formatter = java.text.NumberFormat.getNumberInstance ();
    formatter.setMinimumFractionDigits (2);
    formatter.setMaximumFractionDigits (2);
    String s = formatter.format (x); for (int i = s.length (); i <10; i ++) System.out.print (''); System.out.print (s);

    2004: Java
    System.out.printf ("% 10.2f", x);

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