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What is the role of a symbol table in a compiler?

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Question: What is the role of a symbol table in a compiler?

Options:

  1. To store the intermediate code
  2. To keep track of variable names and their attributes
  3. To optimize the code
  4. To perform lexical analysis

Correct Answer: To keep track of variable names and their attributes

Solution: 

The symbol table is used to store information about variable names, types, scopes, and other attributes during the compilation process.

What is the role of a symbol table in a compiler?

Practice Questions

Q1
What is the role of a symbol table in a compiler?
  1. To store the intermediate code
  2. To keep track of variable names and their attributes
  3. To optimize the code
  4. To perform lexical analysis

Questions & Step-by-Step Solutions

What is the role of a symbol table in a compiler?
  • Step 1: Understand that a compiler is a program that translates code from one programming language to another.
  • Step 2: Know that during this translation, the compiler needs to keep track of various elements in the code, like variable names.
  • Step 3: The symbol table is a special data structure used by the compiler to store information about these elements.
  • Step 4: The symbol table holds details such as the names of variables, their types (like integer or string), and their scopes (where they can be used in the code).
  • Step 5: When the compiler processes the code, it checks the symbol table to find out information about variables and ensure they are used correctly.
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