/* The %LET commands appear before the DATA step. Note that the character */
/* string "cube" doesn't need quotes                                  */
%let mypower=3;
%let powerword=cube;
/* The DATA step looks pretty normal             */
data a;
input x;
y=x**&mypower;
datalines;
3
5 
7
;
run;
/* Double quotes are needed for the TITLE statement in order */
/* for SAS to read the character variable*/
Title "Taking the &powerword of each x value";
proc print data=a; 
run;

/* Students should replace the filename in the active LET command */
/* with their own txt file from CE 8 */
/* It would be interesting to make this macro more flexible--e.g., have it pull */
/* out the student names from their text files */
*%let Exercise8=Class_Exercise_8_grego_1_EXER8;
*%let Exercise8=EXER8;
*%let Exercise8=/STAT 540/EXER8;

data a;
infile "/home/grego1/STAT 540/&Exercise8..TXT";
*infile "/home/grego1&Exercise8..TXT";

input x1-x10 xbar;
run;
proc print data=a;
/* double quotes around .txt did not work--a single stray double quote was printed */
title "Output file: &Exercise8..txt";
run;