Compiler Design - Lexical analysis & Parsing


 In an aboslute loading scheme, which loader function is accomplished by programmer?

A. Allocation
B. LInking
C. Reallocation
D. both (A) and (B)

Option: D

Explanation :


A compiler program written in a high level language is called

A. source program
B. object program
C. machine language program
D. none of these

Option: A

Explanation :


 Advantage of using assembly language rather than machine language is that

A. it is mneomonic and easy to read
B. addresses any symbolic not absolute
C. introduction of data to program is easier
D. All of these

Option: D

Explanation :


An interpreter is a program that

A. places programs into memory and prepares them for execution
B. automates the translation of assembly language into machine language.
C. accesses a program written in a high level language and produces an object program.
D. appears to execute a source program as if it were machine language.

Option: D

Explanation :


 Language which have many types, but the type of every name and expression must be calculated at compile time are

A. strongly-type languages
B. weakly typed languages
C. loosely typed languages
D. none of these

Option: A

Explanation :

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Syllabus Covered in this section is

  • Compilation and Interpretation 
  • Bootstrap compilers
  • Phases of compilation process
  • Lexical analysis
  •  Context free grammars
  • Parsing and parse trees
  • Representation of parse (derivation) trees as rightmost and leftmost derivations
  • Bottom up parsers-shift-reduce, operator precedence and LR
  • Topdown parsers-left recursion and its· removal.
  • Recursive descent parser.
  • Predictive parser
  • Intermediate codes-Quadruples, Triples
  • Intermediate code generation
  • Target code generation
  • Basics of  Code optimization
  • Syntax directed translation
  • Runtime environments

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