The following multiple choice problems have the possible answers:
a) the code will not compile
b) the answer is undefined
c) the code will execute successfully
d) none of the above

Question 1. int i; assert (i == 0);
Question 2. int i; assert (i = 1);
Question 3. int& i;
Question 4. int f(int& i = 2) { return i; }
Question 5. int g(const int& i = 3} { return i; }