CSL2601 ASSIGNMENT 2 SEMESTER 2 2023 QUALITY ANSWERS
C language is:
a. Imperative language
b. Declarative language
c. Functional language
d. None of these
Python interpreter performs most of sematic checks at run time. It is called:
a. "Static" language
b. "Dynamic" language
c. All of th...
1). C language is:
a. imperative language
b. declarative language
c. functional language
d. none of these
Ans: a
2). Python interpreter performs most of sematic checks at run time. it is called:
a. "static" language
b. "dynamic" language
c. all of these
d. none of these
Ans: b
3). Describe the language generated by below regular expression:
(0|1)*(0|1)(0|1)(0|1)
a. all binary sequences have at least three bits
b. all binary sequences ended by 011, 001, 010, 000
c. all binary sequences ended by 100, 110, 101, 111
d. none of these
Ans: A
4). What is ambiguous grammar?
a. a grammar is ambiguous if some string can be generated by two or more distinct parse
trees
b. a grammar is ambiguous if some string can be generated by one parse trees
c. both a and b are true
d. both a and b are false
Ans: A
5). Which token is this:
digit digit *
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, a. any string
b. integer
c. real number
d. none of these
Ans: b
6). Qn = 6 given the derivation:
expr <- expr op expr
<- expr op id
<- expr + id
<- expr op expr + id
<- expr op id + id
<- expr * id + id
<- id * id + id
what type of this derivation?
a. left-most derivation
b. right-most derivation
c. neither left-most nor right-most derivation
d. none of these
Ans: b
7). What is a dynamic sematic check of c language?
a. variables are never used in an expression unless they have been given a value
b. arithmetic operations do not overflow
c. array subscript expressions lie within the bounds of the array
d. all of these
Ans: d
8). What is the key idea in static scope rules?
a. bindings are defined by the physical (lexical) structure of the program.
b. there is no scope rule
c. scope rules are not necessary
d. none of the other choices
Ans: a
9). Python use:
a. dynamic scoping
b. static scoping
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