Code Sample A

union test { int x; char arr[8]; int y; }; int main() {

cout << sizeof(union test)); return 0; }

-What would you expect the output to be in Code Sample A. Why?

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Code Sample B

// using the union in code sample A test t; t.y = 40; cout << t.arr << endl;

-What is the output of Code Sample B? Why?

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Code Sample C

int x = 1, y = 2; #ifdef next x = 2; y = 1; #endif cout << "x is " << x << " y is " << y << endl;

-What is the output of Code Sample C?

-What are two reasons you might use a similar structure to Code Sample C?

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Code Sample D

#define A 1 + 2 #define B 3 + 4

int var = A * B; cout << var << endl;

-What is the output of Code Sample D?

-Copy Code Sample D below and edit it to make it work more as expected.