Repeat the preceding two exercises, modifying your code to include runtime checking of array subscript bounds. In Section 8.2.3 we discussed how to differentiate between the constant and variable...

Repeat the preceding two exercises, modifying your code to include runtime checking of array subscript bounds. In Section 8.2.3 we discussed how to differentiate between the constant and variable portions of an array reference, in order to efficiently access the subparts of array and record objects. An alternative approach is to generate naive code and count on the compiler’s code improver to find the constant portions, group them together, and calculate them at compile time. Discuss the advantages and disadvantages of each approach.