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Programming-Idioms

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  • Fortran

Idiom #156 Format integer with zero-padding

Assign to the string s the value of the integer i in 3 decimal digits. Pad with zeros if i < 100. Keep all digits if i ≥ 1000.

write (unit=s,fmt='(I0.3)') i

This assumes that s is long enough.
(def s (format "%03d" i))
New implementation...
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write (unit=s,fmt='(I0.3)') i
(def s (format "%03d" i))
string s = string.Format("{0:000}",i);

string s = format("%03d", i);
var s = i.toString().padLeft(3,'0');
s := fmt.Sprintf("%03d", i)
let s = i.toString();
if(i<100)
  s = ('00'+i).slice(-3);
String s = String.format("%03d", i);
NumberFormat f = getIntegerInstance();
f.setMinimumIntegerDigits(3);
f.setGroupingUsed(false);
String s = f.format(i);
String s = "%03d".formatted(i);
string.format("%03d", i)
$s = sprintf('%03d', $i);
s := format('%.3d',[i]);
my $s = sprintf '%03d', $i;
s = format(i, '03d')
s = '%03d' % i
s = "%03d" % i
let s = format!("{:03}", i);