Q. Output file of Lex is _____ , if the input file is Myfile.

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Q. Type checking is normally done during?

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Q. By whom is the symbol table created?

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Q. What does a Syntactic Analyser do?

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Q. Semantic Analyser is used for?

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Q. Task of the lexical analysis phase is

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Q. Which is a permanent database in the general model of compiler

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Q. Which table is a permanent databases that has an entry for each terminal symbol ?

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Q. The output of lexical analyser is

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Q. Machine independent phase of the compiler is

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Q. Which of the following is used for grouping of characteristics into tokens ?

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Q. which of the following grammer is LR(1) ?

a)A->aAa
A->bAb
A->a
A->b

b)A->aAa
A->aAb
A->c

c)A->A+A
A->a

d)both a and b

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Q. Which of the following parser is the most powerful ?

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Q. The optimization which avoids test at every iteration is

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Q. A parser with valid prefix property is advantageous because it

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Q. Back-patching is useful for handling

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Q. Access time of the symbol table will be logarithmic,if it is implemented by

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Q. A shift reduce parser carries out the actions specified within braces immediately after reducing,with
the corresponding rule of the grammar

s->xxW{print “1”}
s->y{print “2”}
w->sz{print “3”}

what is the translation of “xxxxyzz” ?

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Q. which of the following cannot be used an an intermediate code form ?

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Q. A Language L is defined by L={xn yn |n>1} . Which of the following definitions generates the same
language as L

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