how to a variable from another variable with some values leading blank space

[knveraraju91]

Dear,

I need to create a variable with some values containing leading values. 

output needed in dataset 'two'  for variable 'c'

c

all

  aaa

  bbb

  ddd

In the above output,  i need to have leading blanks for all except first value 'all'.     Please suggest. Thank you

data one;
input a b$;
datalines;
1 all
2 aaa
3 bbb
4 ddd
;
data two;
set one;
if a=1 then c=a;
else c=  a;
run;

[heffo]

If you just want a leading space I would use the cat function. I would also use strip to make sure that there are no spaces to begin with in the variable a. 

data two;
set one;
if a=1 then c=a;
else c=  cat(" ",strip(a));
run;

Or am I missing something more?  

[Reeza]

What do you need the leading blanks for? PROC REPORT now has an indent option within the style or somewhere at least that can control indents.

[Kurt_Bremser]

Blanks in code are never blanks in data. Blanks in code are just separators between code elements. To have blanks as data, you need to make that clear to the data step compiler by using quotes and the proper concatenation operator:

a = "  " || a;

Note that this may cause the truncation of the values in a.