insert separator

[BrahmanandaRao]

data _null_;
	separator='*';
	x='SAS';
	y=catx(separator,x);
	put y=;
	run;
	

Desired output;

S*A*S

[Kurt_Bremser · Accepted solution]

Run a loop over the string that selects single characters with SUBSTR, and concatenate those:

do i = 1 to length(x);
  y = catx(separator,substr(x,i,1));
end;

Make sure that the defined length of y is sufficient (at least double the defined length of x minus 1).

[BrahmanandaRao]

data n;
do i = 1 to length(x);
separator='*';
y = catx(separator,substr(x,i,1));
end ;
run;

[Kurt_Bremser]

If the separator does not need to be dynamic, you can "hardcode" it:

do i = 1 to length(x);
  y = catx('*',substr(x,i,1));
end;

[BrahmanandaRao]

i didn't get desired ouput above code

[Kurt_Bremser]

Please supply example data in a data step with datalines (DO NOT SKIP THIS!), and the code you ran against that dataset, and indicate where the result does not meet your expectations.

[BrahmanandaRao]

data s;
x='SAS';
do i=1 to length(x);
y=catx('*',substr(x,i,1));
end;
run;

[Kurt_Bremser]

My bad, y was missing as argument to the CATX function:

data s;
x = 'SAS';
length y $5;
do i = 1 to length(x);
  y = catx('*',y,substr(x,i,1));
end;
drop i;
run;

[BrahmanandaRao]

Perfect
Thank You