ex4

[tariqjamil-bwp]

fn main() {
    let string1 = String::from("abcd");
    let string2 = "xyz";
    
    let result = longest_with_announcement (
    string1.as_str(),
    string2,
    "Today is someones' birthday !",
    );
    
    println!("The longest string is {}", result);
}

use std::fmt::Display;

fn longest_with_announcement<'a, T> (
    x: &'a str,
    y: &'a str,
    ann: T,
) -> &'a str
where 
    T:Display,
{
    println!("Announcement! {}", ann);
    if x.len() > y.len() {
        x
    } else {
        y
    }
}

(Playground)

Output:

Announcement! Today is someones' birthday !
The longest string is abcd

Errors:

   Compiling playground v0.0.1 (/playground)
    Finished dev [unoptimized + debuginfo] target(s) in 1.85s
     Running `target/debug/playground`