Writing style of if-statement

I'm just wondering, I found on some sites if-statement written this way

  if (x == "a") { y = 1; } 
  else if (x == "b") { y = 2; }
  else if (x == "c") { y = 3; }
  else if (x == "d") { y = 4; }
  else if (x == "e") { y = 5; }
  else if (x == "f") { y = 6; }
  else if (x == "g") { y = 7; }
  else { y = 8; }

is there any difference for code if usually should be:

            if (x == "a")
            {
                y = 1;
            } 
            else if (x == "b")
            {
                y = 2;
            }
            else (x == "c")
            {
                y = 3;
            }