The March of Progress

From Cay Horstmann (http://horstmann.com/)

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);