Write a C++ program that prompts the user to input an integer (n) and outputs the sum of all integers i from 1 to n, but if i = 2 (j is an integer) then i will have a negative sign. For example, for n = 8 the sum is equal to -1-2 + 3-4 + 5 +6+7-8= 6, because 1, 2, 4 and 8 are 2,2, 22 and 2 respectively while 3, 5, 6, and 7 are not equal to 2' for any integer j. Notar Solo bi