2. (30 points) Analyze the following programs and write down the output of each program. Please print every character (including whitespace character) clearly! Output: include using namespace std; int main() int x = 2, int z 3 int y = 7 z - 2 + (x + y); cout Using namespace std; int main() int a = 3; intb8; cout using namespace std; int main() int a = 4: int b-9; b++; cout