1. What is the only thing that you should ever do with the NULL pointer?
2. In the following declaration, explain what type p is, and describe how it might be used:
double**** p;
3. If x has the address 0x3fffd1c, then what will values of p and q be for each of the following:
double x = 1.01; double* p = &x; double* q = p + 5;