DATA xvar;  
INPUT x @@;  
CARDS;  
3 -2 4 7 5 -10  
;  
RUN;  
DATA xyz;  
SET xvar;  
y=4;  
x+y;  
x*y;  
x**y;  
z=x+y;  
;  
PROC PRINT data=xyz;  
RUN;