Who is the author of the book Room on the Roof?
The novel The Room on the Roof was written by author Ruskin Bond
A gabled roof is the triangular portion of a wall between the edges. It is the sloping roof. Thus the type of enclosing roof the volume dictates the shape of the gable. If you built a room over the roof is not possible. So you replace the roof and raise walls and ceiling of the room and replace the roof.