can someone help with the full code please. the output should look like the black screen. thank you for your help to whoever is helping me i been trying for the last 3 days.

Recursion Implement recursive functions. 1. Write a recursive function compute Sum that will compute the sum of the first n integers in an array of at least n integers. Hint: begin with the nth integer. 2. Given two integers, start and end, where end is greater than start, write a recursive CH function sum that returns the sum of the integers from start through end, inclusive. 3. Write recursive functions: a. Revise the function writeBackward, discussed in Section 2.3.1, so that its base case is a string of length 1. b. Write a CH function that implements the pseudocode function writeBackward2, as given in Section 2.3.1. CPSC 150 Spring 2019 4. Given an integer n, m >0 and m>n, write a recursive CH function writeIntegers that writes the integers n, n+1, ..., m. 5. Write an integer n >0, write a recursive C++ function sumofSquares that returns the sum of the squares of 1 through n. 6. Write a recursive C+ function reverseDigits that writes the digits of a positive decimal integer in reverse order. 7. Write a recursive C++ functions a. WriteLine writes a character repeatedly to form a line of n characters each. For example, waiteunes *. 5) produces the line ***** Should use the function porotypes below //Function prototypes int, compute Sum (const int anArray[], int n); int sun(int start, int end); void writeBackward (string 3); void writeBackward2 (string 3); void writeIntegers (int n, int n); int sumofSquares (int n) ; void reverseDigits (int integer); void writeLine(char ch, int n); void writeBleck (char ch, int n, int n) ; Test your functions with followings: int, anArray[SIZE] = {1, 2, 3, 4, 5, 6, 7, 8}; Stining 3 = "cat"; Sample Run: 1. sun(anArray, 5) returns 15 2. sunc2, 5) returns 14 3. a. writeBackwards(s) returns tac 3. b. write Backwards2