> On Nov 28, 2019, at 9:35 AM, Dennis Lee Bieber <wlfr...@ix.netcom.com> wrote:
>
> Channeling ancient FORTRAN, I'd interpret it as
>
> 1X Skip one space
> A7 Seven character alpha
> I3 Three digit integer
> A27 27 character alpha
>
> and it is rather painful when the arguments are literals of those sizes.
> Makes more sense if the arguments are strings of various widths yet column
> alignment is required.
>
> Since I still favor string interpolation for formatting, I'd probably
> just end up with
>
> print(" Column %3d of product matrix A*AINV:")
>
> {Odd that the original uses a 1X format, when the literals have white space
> at the adjoining ends... Why not " Column " with A8 format?}
Still channeling Fortran, 1X ensured a blank in column 1, which was used
strictly for carriage control on a line printer. A8 may, or may not leave a
blank in column 1, which could have caused erroneous carriage controls.
Bev in TX
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