Write a program that reads a sequence of integers into an array and that computes the alternating sum of all elements in the array. For example, if the program is executed with the input data 1 4 9 16 9 7 4 9 11 then it computes 1 4 + 9 16 + 9 7 + 4 9 + 11 = 2.c++,VS,not use stdafx.h)