It all depends on the surgeon. For my two c-sections I had internal stitches (dissolvable), and staples on the outside. The staples come out on day 5. For my first I was still in hospital on day 5 so they did them there, with my second I went home on day 4 - they have a home call nurse who will come to your house to take them out on day 5 if you're already at home.

Having the staples out was a huge relief for me, they tend to pull on the wound when you move certain ways. It didn't hurt too badly having them taken out either, slight pulling and poking in an area that's already sensitive, but nothing too bad.