22 General utilities library [utilities]

Forces the formatted argument to be aligned to the start of the field by inserting n fill characters after the formatted argument where n is the padding width.

This is the default for non-arithmetic non-pointer types, charT, and bool, unless an integer presentation type is specified.

Forces the formatted argument to be aligned to the end of the field by inserting n fill characters before the formatted argument where n is the padding width.

This is the default for arithmetic types other than charT and bool, pointer types, or when an integer presentation type is specified.

Forces the formatted argument to be centered within the field by inserting $\lfloor \frac{n}{2}\rfloor$ fill characters before and $\lceil \frac{n}{2}\rceil$ fill characters after the formatted argument, where n is the padding width.