How to turn a corner and have the camera and player keep going in direction the corner is leading to.

I'm trying to make a temple run esque game, and so need to make (a) script(s) so that I can turn the corner when the user presses the left arrow key, and then the character will keep moving in that direction and the camera will turn as well.

I've been looking up a script for this for ages so all help would be appreciated.

Thanks ,