This program should be done in c++, not java or python.

. Write a program that recursively counts down from n a) Create a void recursive function named countdown that accepts an integer n, and progressively decrements and outputs the value of n b) Test your function with a few values for n. 4 5. Write a program that recursively outputs a given integer in reverse a) Create a void recursive function that accepts an integer n and outputs the number backwards. b) Test your function with a few values for n. Output Example Write backward (3): 3 Write_backward (12) 21 Write backward (123):321 Write_backward (2017) 7102