Computers and Technology, 10.12.2019 00:31 reaperqueen21
Exercise. (a tokenizer for a small imperative language) a program that accepts a sequence of characters and returns a sequence of tokens is called a tokenizer or lexical analyzer. a compiler is a program that translates a sequence of characters, which represents a program, into a sequence of lowlevel instructions that can be executed on a machine. in its most basic form, a compiler consists of three parts: 1. tokenizer: reads a sequence of characters and outputs a sequence of tokens.2. parser: reads a sequence of tokens and outputs an abstract syntax tree (parse tree)3. code generator: traverses the syntax tree and generates low-level instructions for a real machine or an abstract machine. the proposed imperative language which should be tokenized has the following list of tokens: keywords, operators, atoms, integers, floats, and separators. the keywords are: program, void, bool, int, float, true, false, if, then, else, local, in, end, assign, call. the operators are: β=β, β+β, β-β, β*β, β/β, β==β, β! =β, β> β, β=β. an atom starts with a lowercase character, followed by any number of alphanumeric characters, but it cannot be a keyword
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Computers and Technology, 22.06.2019 14:30
If the polar bear were taken out of the food chain what would happen to the seal population the seal population would diminish the seal population would grow dramatically the seal population would stay the same the seal population would decrease slightly
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Computers and Technology, 23.06.2019 12:00
3. when you right-click a linked spreadsheet object, what commands do you choose to activate the excel features? a. linked worksheet object > edit b. edit data > edit data c. linked spreadsheet > edit d. object > edit data
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Computers and Technology, 23.06.2019 22:30
You draw two cards from a standard deck of 52 cards, but before you draw the second card, you put the first one back and reshuffle the deck. (a) are the outcomes on the two cards independent? why?
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Computers and Technology, 24.06.2019 07:00
Why do we mark tlc plates with pencil and not with pen
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Exercise. (a tokenizer for a small imperative language) a program that accepts a sequence of charact...
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