Please C++ programming

2. The Fibonacci sequence is 0, 1, 1, 2, 3, 5, 8, 13, 21, ... where the first two terms are 0 and 1, and each term thereafter is the sum of the two preceding terms. Write a program that repeatedly prompts for and reads a positive integer value n and then calculates and displays the nth number in the Fibonacci sequence (the program should force reentry if the user enters a non-positive n). For example, if n = 8, then the program would display 13. Program requirements: a) Use a do loop to ensure that the user enters a positive value for n. b) Use a for loop to perform the calculations needed to determine the nth Fibonacci number. c) Use a do loop to control the program repetition for finding more Fibonacci numbers