EXERCISES
- Some languages distinguish between keywords and reserved words. Suppose we want to allow a keyword as an identifier under some circumstances, how can it be done?
- We have a variable declaration statement int a, available in the simple language. Will it not be better to have a declaration plus initialization like int a 15 which will not only reserve space for variable ‘a’ but also initialize it to a value 15? What changes are required in the grammar, Scanner, parser and code generation to implement this?
- The if statement has rather limited power, as no relational operators are available in simple. Suggest a set of relational operators to be included in simple and investigate what modifications are required in various phases of the compiler ...
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