C++ program, please comment out as much as possible. Thank you

19. A robot can take steps of 1 meter or 2 meters. Write a recursive program to calculate the number of ways the robot can walk n meters. Refer to the slides for more information Expected Output: Distance of the walk? 5 The robot can walk 5 meters in 8 ways Distance of The robot can walk 9 meters in 55 ways. the walk? 9 (iii) Distance of the walk? 12 The robot can valk 12 meters in 233 vays