Adding a trailing space to a character variable

[JosvanderVelden]

If @Kurt_Bremser indications have not made it clear you can run the code below and analyze the output.

data want;
   length var1 $50 var2 $75 var3 $100 var4 $100;
   var1 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
   var2 = "# " || var1;
   len_var2 = length(var2);
   var3 = var2 || " #";
   var4 = substr(var2, 1, len_var2) || " #";
   len_var3 = length(var3);
   len_var4 = length(var4);
run;