Pescuma

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 &lt; 10; i++)

    System.out.print(' ');

System.out.print(s);

2004: Java

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