SQL output parameters in stored procedures

In C# add parameter of type output and obtain its value after cmd execution:

   1:  cmd.Parameters.Add("@newId", SqlDbType.Int);

   2:  cmd.Parameters["@newId"].Direction = ParameterDirection.Output;

   3:  cmd.ExecuteNonQuery();

   4:  int result = (int)cmd.Parameters["@newId"].Value;

   5:  return result;

In sproc, declare the parameter as type output:

   1:  Create procedure... (

   2:  @param1 int, etc

   3:  @newId int OUTPUT

   4:  )

   5:  begin

   6:  ...

   7:  set @newId = 123

   8:  return

   9:  end