On the opening pages of the novel we can see that he likes his job as a fireman. He has been doing this job for ten years and is really satisfied with the prestige that the job promotes, with the privileges he has and because there is a family pride in this occupation since his father and grandfather were also firefighters. He only starts to dislike this job when he meets Clarisse.
Answer: The difference between a compound sentence and complex sentence is that a compound sentence has two independent clauses and a complex sentence has one independent clause and one dependent clause
You could use both as long as you use them correctly