🚀 go-pugleaf

FFarance (ffarance@aol.com) wrote:

: The "printf" and "scanf" funcitons are extended via the "?" type modifier.
: For example:

: 	printf("%?d",precof(x),x);

: will always work.  Think of "?" as a combination of "*" (takes the next
: argument) and "l" and "h" (the type modifiers).  I you really want to
: get wild:

: 	printf("%*?d",field_width,precof(x),x);

: The "precof()" operator returns a "prec_t" which extracts the precision
: information (and other SBEIR information) from the operand.  The "scanf"
: function is extended similarly.

It seems like a little overkill to have to always include a ?/precof()
combination for any precision number.  Why not define a new modifier
that will automatically do the same lookup as precof() without the need
for the programmer to explicitly state it?  So, for example, the 2 above
examples become (assuming the new modifier is 'P'):

    printf("%P", x);                   AND
    printf("%*P", field_width, x);

This looks much more reasonable and readable to me.

						-- Jonathan Geisler --