What is the value of the variable r after the following code segment is executed? int x = 10, int z = x / y; switch (z) else { case 1: r = ++z; case 2: if (x y > 0) r = ++x + y; y = 3, r = 2; r = y = x; break; case '3': r = x >y? x+y: x - y; break; case 3: tiuoto Wing r = x > y ? x++ + y: x--- y; case 4: r = 3; break; default: r = 0; }