Fortran - Re: C String Prefix Operator Idea (Was: gfortran diagnostics and

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Re: C String Prefix Operator Idea (Was: gfortran diagnostics and

glen herrmannsfeldt

2007-11-24, 7:10 pm

jamesgiles@att.net wrote:

> On Nov 24, 4:27 pm, Gary Scott <garylsc...@sbcglobal.net> wrote:

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> A whole new class of identifier is "a minor extension"?

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> So, string "literals" are not only *not* literal (meaning
> the same as their appearance) but aren't even compile-time
> constants anymore? And that's "a minor extension"?

My understanding is that he means a compile time substitution.
That is, the % variables are compile time variables.

The PL/I preprocessors has compile time variables, I don't remember
if it does substitution inside string constants. One of the old
favorites is unrolling a loop:

%do i=1 to 10;
a(i)=b(i)*c(i);
%end;

will compile to 10 assignment statements.

-- glen

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