1.2.2 Applications Generation

Question 1

What are the stages of compilation?

Answer 1

● Lexical analysis
● Syntax analysis
● Code generation
● Optimisation

Question 2

What happens during syntax analysis?

Answer 2

● Tokens are compared to the rules of the
programming language
● Syntax errors are identified and reported as a list
● Detail added to
● Semantic analysis (finding logic errors)

Question 3

What happens during the lexical analysis?

Answer 3

● Comments and whitespace are removed
● Variables, and subroutines stored in a symbol table
● Code is converted into tokens

Question 4

What happens at code generation and optimisation?

Answer 4

● Object code is created
● Will attempt to reduce any redundancy by producing object code that achieves the same effect specified by the source program

Question 5

What does the linker do?

Answer 5

Combines together a number of separate object codes so that the modules are linked together correctly

Question 6

What does the loader do?

Answer 6

Loads an executable program into the main memory

Question 7

What is a library?

Answer 7

A collection of ready-complied programs, which can be loaded and run when required