Hamilton C shell Printf Format Directives

These argument formats are recognized by `printf`:
	`%c`	Single character.
	`%d`	Decimal number.
	`%e`	[`-`]d`.`dddddd`e`[`+-`]ddd
	`%f`	[`-`]ddd`.`dddddd
	`%g`	`%e` or `%f` formatting, whichever is shorter.
	`%o`	Unsigned octal number.
	`%s`	String.
	`%x`	Unsigned hexadecimal number.
	`%%`	Literal `%` character.
Additional parameters may lie between the `%` and the control letter:
	`-`	Left-justify expression in its field.
	width	Pad field to this width as needed; leading 0 pads with zeros.
	`.`prec	Maximum string width or digits to right of decimal point.