for

The for loop iterates over ranges of values or the items in a collection:

1. ```
   fn main() {
   ```
2. ```
       for x in 1..5 {
   ```
3. ```
           println!("x: {x}");
   ```
4. ```
       }
   ```

6. ```
       for elem in [1, 2, 3, 4, 5] {
   ```
7. ```
           println!("elem: {elem}");
   ```
8. ```
       }
   ```
9. ```
   }
   ```

• Under the hood for loops use a concept called “iterators” to handle iterating over different kinds of ranges/collections. Iterators will be discussed in more detail later.
• Note that the first for loop only iterates to 4. Show the 1..=5 syntax for an inclusive range.