Concatenate dynamic columns starting with a string and numeric

[ywon111]

Hi, Is there a better way to concatenate all these variables that starting with a variable name var and a value attached?

Eg.

var1

var2

var3

var4

var5

This is what I got now, but would pick up variables like var_ which not needed.

var_conc= catx(',', of var:);

Thanks

[PeterClemmensen]

Provided, that your posted data is representable, you could do

data have;
input (var1 var_1 var2 var_2 var3 var_3)($);
datalines;
a b c d e f
;

data want;
   set have;
   var_conc = catx(',', of var1-var3);
run;

[ywon111]

Thanks but this is what I have and need:

data want;
keep skill:;
set have;

How do I concatenate all the skill variables?

[ChrisNZ]

Why do you change your question half-way?

What exactly do you want? To keep the  SKILL:  variables but not the  SKILL_:  variables? 

Show us the proc contents of your table, and describe exactly what you want to concatenate.

[ywon111]

I've got a long list of skill1, skill2, skill3, skill4, etc variables and need to concatenate all these variables to one. There's a variable skill_ which is not required.
Thanks