@@ -0,0 +1,17 @@
+{$R+}
+
+function d(a,b:string):Integer;
+begin
+ d := Ord(a[1])-Ord(b[1]);
+end;
+var
+ c: SmallInt;
+ ch : char;
+ ch:='A';
+ c := Byte(ch)-Byte('B');
+ WriteLn(c);
+ WriteLn(d('a','b'));
+end.