Integer userInput is read from input. Write a while loop that iterates until userInput is negative. In each iteration:

Update integer result as follows:

If userInput is even, add userInput to result.

Otherwise, subtract userInput from result.

Then, read the next integer from input into variable userInput. #include

using namespace std;

int main$()\{$

int userInput;

int result;

result $=0$;

cin $>>$ userInput;

$/*$ Your code goes here $*/$

cout $<<$ "Result is $"<<$ result $<<$ endl;

return $0$;

$\}$