programming-examples/%3d specifies that the integer number should be displayed with three digits.pl at 1b608328baf5f72c658a15cb94abc29d7c044a10 - programming-examples - michuIT: Everything is code

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 #!/usr/bin/perl -w
 $x = 123;
 $y = 1234;
 $z = 1;
 printf("\t x=%3d y=%4d z=%5d\n", $x, $y, $z);