Listing: 1 MODULE OChar; 2 VAR a : ARRAY [1 .. 4] OF CHAR; ExitCode : INTEGER; 3 PROCEDURE Count(VAR x : ARRAY OF CHAR) : INTEGER; 4 BEGIN 5 RETURN HIGH(x) + 1 6 END Count; 7 BEGIN 8 a := "test"; 9 ExitCode := Count(a) 10 END OChar. 0 errors