Listing: 1 MODULE QArith; 2 VAR x, y : INTEGER; ExitCode : INTEGER; 3 BEGIN 4 x := 1 + 2 * 3 - 4 DIV 2; 5 y := (x + 10) * 2 MOD 7; 6 ExitCode := x + y 7 END QArith. 0 errors