title: Creating ID variable using digits from two different variables on SAS
body: <p>I'm trying to create a new variable on SAS. There is a column called "Statefip" and a column called "countyfip". I need a four digit ID number that combines these two columns. </p>
  
  <p>For example:</p>
  
  <p><a href="https://i.stack.imgur.com/Jq7Yf.png" rel="nofollow noreferrer">enter image description here</a></p>
  
  <p>How do I tell SAS to follow this format when creating this new variable? </p>