Code in c++ please !

Question Not yet answered Marked out of 10.00 Flag question Consider the following sequence of 1, 1,2,3, 5, 8, 13, 21, 34, This sequence called the Fibonacci sequence. Given the first two numbers of the sequence (say, a, and a), the nth number a, n-3, of this sequence is given by: numbers: Note that a, - 1 and a2 -1. Write a program that determines the nth Fibonacci number given the first two numbers