/*********************************************************************
Goal:
Convert missing values to zeros.

Strategy:
Test the variable, if the value is missing, then set to zero

Related technique:
If you don't want/need to change the stored value, then you can use
the option MISSING= and have missing values printed as any one character.

Documentation:
"SAS Language, Reference, Version 6, First Edition" pages 36-37,292-296,763
**********************************************************************/


data test;
  drop i;
  input joe harry mike john;
  array mis{*} joe--john;           /* for simplicity if many variables */
  do i=1 to dim(mis);               /* loop through the array */
    if mis{i}=. then mis{i}=0;      /* convert . to 0 */
  end;
cards;
. 1 2 3
2 3 4 .
. 1 3 4
. . 1 .
1 . 1 .
;


proc print;run;