Write a c++ code. Write a recursive function, vowelsCount that returns the number of vowels in a string. Output must needed.

In C programing Write a recursive function that returns the product of the digits of its integer input parameter, n. You may assume that n is non-negative. For example, productDigits(243) should return 24, since 2 x 4 x 3 = 24.int productDigits (int n) {

Write a recursive C function that returns the uppercase letters of the string named str by storing them in the cap variable. The prototype of the function should be: void F (char * str, * char cap);   we use devC   ASAP

Write a recursive function that accepts a number and returns its factorial. b. Write a recursive function that accepts an array, its size and the index of the initial element as arguments. The function fills the array with the elements of the following sequence: n1 = 3, nk+1 = nk+35 c. Write an iterative and a recursive versions of the binary search. In C++ coding