You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

36 lines
578 B

## prev_prime
### Instructions
Create a **function** which returns the first prime number which is less than or equal to the `u64` passed as an argument.
If there are no smaller primes, the function should return `0`.
### Expected function
```rust
pub fn prev_prime(nbr: u64) -> u64 {
}
```
### Usage
4 years ago
Here is a possible program to test your function :
```rust
use previousprime::*;
fn main() {
println!("The previous prime number before 34 is: {}", prev_prime(34));
}
```
And its output :
```console
$ cargo run
The previous prime number before 34 is: 31
$
```