UNIT - 1 A Compiler Concepts Quiz

What is the primary purpose of a compiler?

• To execute a program directly

• To translate source code into machine code

• To debug a program

• To edit source code

Which of the following is a key difference between a compiler and an interpreter?

• Compilers execute code line by line

• Interpreters convert entire code into machine language at once

• Compilers require preprocessing, interpreters do not

• Compilers translate the entire program before execution

Which programming language typically uses a compiler?

• Python

• JavaScript

• C++

• PHP

What is the main role of an interpreter?

• To optimize machine code

• To execute high-level code line by line

• To generate intermediate code

• To debug syntax errors

Which of these programming languages commonly uses an interpreter?

• Java

• Python

• C++

• C

Why are interpreters slower than compilers?

• Because they generate optimized code

• Because they translate and execute code simultaneously

• Because they require more memory

• Because they use intermediate languages

What is the first step in the analysis of a source program?

• Syntax analysis

• Semantic analysis

• Lexical analysis

• Code generation

What does lexical analysis produce?

• Syntax tree

• Token stream

• Intermediate code

• Error messages

Which phase checks whether the source program adheres to the rules of the language?

• Semantic analysis

• Syntax analysis

• Lexical analysis

• Code optimization

Semantic analysis ensures which of the following?

• Syntax rules are followed

• Tokens are identified

• Meaning of statements is correct

• Machine code is optimized