st: Listing coefficient of one variable

["FUKUGAWA, N." <nfukugawa@gmail.com>]

Dear all,
Suppose we run a regression model as follows
reg y a b c
and want to know how coefficient of "c" varies according to "d",
how can I write a program?

Note: "d" is integer between 1 and 100 and does not appear in the model and we
do not want to write 100 programs such as
reg y a b c if d==1.

Thanks in advance.
-- 
FUKUGAWA Nobuya, Ph.D.
nfukugawa@gmail.com
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