Stages of comilation

Question 1

What are the 4 stages of compilation?

Answer 1

1. Lexical analysis
2. Syntax analysis
3. Code generation
4. Code optimisation

Question 2

What is lexical analysis?

Answer 2

• All white space removed
• Remaining code is turned into tokens
• Symbol table is created

Question 3

What is Syntax analysis?

Answer 3

• Syntax of program is checked against the rules
• Abstract syntax tree created
• If any code breaks the syntax rules errors generated

Question 4

What is code generation?

Answer 4

• Syntax tree converted into object code

Question 5

What is code optimisation?

Answer 5

• Code optimised to run as fast as possible

- Involves removing redundant code