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Discussion Forum

Que. Match the description of several parts of a classic optimizing compiler in List - I, with the names of those parts in List - II:

List - I
(a) A part of a compiler that is responsible for recognizing syntax.
(b) A part of a compiler that takes as input a stream of characters and produces as output a stream of words along with their associated syntactic categories.
(c) A part of a compiler that understand the meanings of variable names and other symbols and checks that they are used in ways consistent with their definitions.
(d) An IR-to-IR transformer that tries to improve the IR program in some way (Intermediate representation).

List - II
(i) Optimizer
(ii) Semantic Analysis
(iii) Parser
(iv) Scanner

Code:
(a) (b) (c) (d)
a. (iii) (iv) (i) (ii)
b. (iv) (iii) (ii) (i)
c. (ii) (iv) (i) (iii)
d. (ii) (iv) (iii) (i)
Answer:(iii) (iv) (i) (ii)
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