Converting all character variables to numeric

[ArtC]

Looks like you have plenty of choices to do the conversion.  To add one more; there is a macro in my macro book that demonstrates how to automate this process.  in the sample code search for the macro %ALLCHAR in Section A1.6.4 download the sample code from https://support.sas.com/pubscat/bookdetails.jsp?catid=1&pc=59224