Disadvantages of DDA line drawing algorithm?

Answer 1

1.It drift away from the actual line path because of rounding off float values to integer
2.It causes jaggies or stair-step effect

Disadvantage:
The accumulation of round of error is successive addition of the floating point increments is used to find the pixel position but it take lot of time to compute the pixel position.

Answer 2

we have to do floating point addition in DDA.... so accuracy is low