C++

Only follow the direction and use variable that i would understand please im kinda mew to this program

Sample run

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. Following is a sample output from the program (user input is bold): Enter a positive integer n:3 Enter a positive integer n:0 Enter a positive integer n:8 8th Finbonacci number 13 Continue ( y or n) ? y Enter a positive integer n : 5 5 th Finbonacci number 3 Continue (y or n)?n Process exited after 37.34 seconds with return value 0 Press any key to continue