Understanding Compilation Stages

What is the primary function of lexical analysis?

• To generate machine code from the source code.

• To execute the source code directly.

• To optimize the source code for performance.

• To convert source code into tokens.

Which component of a compiler is responsible for syntax analysis?

• parser

• semantic analyzer

• code generator

• lexer

What does semantic analysis check for in source code?

• Semantic analysis checks for meaning and correctness of variable declarations, type compatibility, and function calls.

• Semantic analysis verifies the speed of code execution.

• Semantic analysis focuses solely on code formatting.

• Semantic analysis checks for syntax errors only.

What is the purpose of intermediate code generation?

• To improve the readability of the source code.

• To convert high-level code directly to machine code.

• The purpose of intermediate code generation is to facilitate optimization and portability of code.

• To eliminate all syntax errors in the code.

How does code optimization improve program performance?

• Code optimization enhances performance by making programs run faster and use fewer resources.

• Code optimization has no effect on resource usage or speed.

• Code optimization makes programs more complex and harder to maintain.

• Code optimization only improves the visual appearance of the code.

What is the final output of the code generation stage?

• Source code

• High-level programming language

• Assembly language

• Machine code or bytecode

What are tokens in the context of lexical analysis?

• Tokens are large blocks of code that are processed together.

• Tokens are the smallest units of meaningful data in lexical analysis.

• Tokens are the final output of a compiler.

• Tokens are comments and whitespace in the source code.

How does a parser contribute to syntax analysis?

• A parser only formats the code without checking syntax.

• A parser checks the syntax of code and builds a parse tree for syntax analysis.

• A parser compiles the code into machine language directly.

• A parser executes the code to check for errors.

What role do symbol tables play in semantic analysis?

• Symbol tables facilitate the management of variable and function information during semantic analysis, ensuring correct usage and type checking.

• Symbol tables are used for memory allocation during runtime.

• Symbol tables store only the values of variables without type information.

• Symbol tables are primarily for optimizing code execution speed.

What is the difference between static and dynamic semantic analysis?

• Static semantic analysis occurs at compile time, while dynamic semantic analysis occurs at runtime.

• Static and dynamic semantic analysis are the same process.

• Dynamic semantic analysis is performed during compilation.

• Static semantic analysis is only for syntax checking.