Answer Posted / rajaanku11

DATA ABC;
INPUT TDATE DATE9. AVG;
CARDS;
18APR2008 150.00
19APR2008 167.00
20APR2008 123.00
21APR2008 145.00
;
RUN;

data _null_;
set abc;
if tdate='18APR2008'D then
call symput('x',avg);
if tdate='21APR2008'D then
call symput('y',avg);
z=&x-&y;
run;

data _null_;
z=&x-&y;
put 'the difference='z;
run;

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