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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,
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 ( 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, 2.2 and 2 respectively while 3, 5, 6, and 7 are not equal to 2' for any integer. Note: Solve this question without defining any other function apart from the main function
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