Count of digits in numeric field

[Anuz]

Hi,

Is there a SAS function to calculate the number of digits in a numeric field ? 

For example: I have a roll number numeric field. I want the count to show as below 

ROLL NUMBER    COUNT

1234567                 7

12345                     5

1212                       4

Thank you 

[PeterClemmensen · Accepted solution]

If you're working with integers only, then try the approach in the blog post Compute the number of digits in an integer by @Rick_SAS.

data have;
input ROLLNUMBER;
count = ceil(log10(ROLLNUMBER + 1)); 
datalines;
1234567 
12345   
1212    
;

Result:

ROLLNUMBER count
1234567    7
12345      5
1212       4

[Anuz]

thank you @PeterClemmensen . That is exactly what I needed. 

[Tom]

If you know the value is an integer (a whole number) then you could just convert it to a string and count the number of digits.

  digits=length(cats(whole_number));