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Explain difference between Scanning and parsing.
Scanning and parsing: Scanning process is the process of recognizing the lexical components in a source string whereas parsing is the process of checking the validity of a source string, and to find out its syntactic structure. The purpose for separating scanning from parsing is that the lexical characteristics of a language can be specified by using Type-3 grammars. All Type-3 production identifies lexical components is also a Type-2 production. Conversely, a recognizer for Type-3 productions is easier, simple to build and more efficient throughout execution than a recognizer for Type-2 productions. Therefore it is better to handle the lexical and syntactic elements of a source language separately.
zero, one, two three address instructions
In a clinic 0.15 of the patients have got the HIV virus. Assume a blood test is carried out on a patient. If the patient has got the virus the test will turn out positive with prob
With a C program to read the text book number, title, author and publisher into a structure and print these values. # include # include void main() { struct boo
Which loader is executed when a system is first turned on or restarted? Ans. Bootstrap loader executed while a system is first turned on or restarted.
haw to convert context free grammar to regular grammar
Linked list means node which is linked each other with a line. It means that every node is connected with another one. Every node of the list hold the reference of the next node.
In class SlotCollection, remove the fields slot1, slot2, slot3 and slot4 and replace them by an array of slots. Modify the rest of the program to work using this array. There is
Explain the principles of operation of centralized SPC and distributed SPC and compare their performance. All the control equipment is replaced with a single processor that mus
Intentional hacking helps in maintaining better security Several companies employ professionals as security specialists whose basic job is to detect and cover loopholes in t
Advantages of random scan display Early computer displays: basically an oscilloscope. Control X, Y with vertical/horizontal plate voltage. Often used intensity as
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