Programming evolition
1980: C
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printf("%10.2f", x);
1988: C++
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cout < < setw(10) << setprecision(2) << showpoint << x;
1996: Java
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java.text.NumberFormat formatter = java.text.NumberFormat.getNumberInstance();
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formatter.setMinimumFractionDigits(2);
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formatter.setMaximumFractionDigits(2);
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String s = formatter.format(x);
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for (int i = s.length(); i < 10; i++)
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System.out.print(' ');
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System.out.print(s);
2004: Java
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System.out.printf("%10.2f", x);
