Rust string error

Question

// first question
println!("what CPU stand for?");
let mut first_answer: String = String::new();
io::stdin()
.read_line(&mut first_answer)
.expect("Something went wrong");
let first_answer = first_answer.trim_end();

// Check if the answer from first question correct or not
match first_answer.to_lowercase() {
"central processing unit" => {
println!("Congratulations you're Correct. Good job 👍");
println!("next question..");
},
_ => println!("Unfortunately you're incorrect"),
};

Error message: expected struct `String`, found `&str`

Answer 1

match first_answer.to_lowercase().as_str() {
...
}

Answer 2

"central processing unit" is of type &str but first_answer.to_lowercase() returns String and you are trying to compare both

Answer 3

Actually already solved it with if else startment in rust

Answer 4

One more question

Answer 5

Why when i use if else startment doesn't get any error and when i use match i am getting an error