Our discussion on lexical analysis in Section 11.2.1 may lead you to believe that every lexical…

Our discussion on lexical analysis in Section 11.2.1 may lead you to believe that every lexical analyzer is unique and built “from scratch.” In fact, it is quite rare to write a scanner when building a compiler for a new language, because there exists a special program called a scanner generator that can, with the appropriate input, act as a “universal scanner” for any language. To use a scanner generator, we need to provide only a formal linguistic description of the tokens in our language and their classification. This description is input to the scanner generator, which then locates and classifies tokens according to the description provided. Thus, instead of writing a program called a scanner, you provide data to an already written program called a scanner generator.

One of the most widely used scanner generators is a program called lex, and it has been used to build dozens of compilers, assemblers, and other linguistic interfaces. Read about scanner generators in general and lex in particular. Find out how they work and the techniques for describing the structure and classification of tokens. Then show how you formally describe in lex the following token types:

a. Identifiers

b. Signed integers

c. Signed real numbers

If your installation has lex available, enter your formal descriptions and have lex locate tokens of each of these types.

Place your order
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more
error: Content is protected !!