Using c++ 1) Write a nonrecursive function that returns the number of digits in a nonnegative integer. 3) Write a recursive function printReverseO that displays an integer's digits in reverse order. 4) Write a non-recursive function that returns length of C-type string. 5) Write a recursive function that returns lenght of C-type string. 6) Write a non-recursive function that returns number of Capital letters in C-type string. 7) Write a recursive function that returns number of Capital letters in C-type string. 8) Write a recursive function that returns number of nodes of linked list.