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661 B
661 B
panic
Instructions
Write a function that tries to open a file and panics if the file does not exist.
Notions
Expected Function
pub fn open_file(s: &str) -> File {
}
Usage
Here is a program to test your function:
use std::fs::File;
use std::fs;
use panic::*;
fn main() {
let filename = "created.txt";
File::create(filename).unwrap();
let a = open_file(filename);
println!("{:?}", a);
fs::remove_file(filename).unwrap();
}
And its output:
student@ubuntu:~/panic/test$ cargo run
File { fd: 3, path: "panic/a.txt", read: true, write: false }
student@ubuntu:~/panic/test$