RosettaCodeData/Task/Empty-string/BBC-BASIC/empty-string.bbc

      REM assign an empty string to a variable:
      var$ = ""

      REM Check that a string is empty:
      IF var$ = "" THEN PRINT "String is empty"

      REM Check that a string is not empty:
      IF var$ <> "" THEN PRINT "String is not empty"