macros-blog-the-macro-full.rs

use std::io::stdin;

macro_rules! read {
    ($v: ident : $t: ty) => {
        let mut buf = String::new();
        let _ = stdin().read_line(&mut buf).unwrap();
        let mut $v = buf.trim().trim_end().parse::<$t>().unwrap();
    };
}

fn main() {
    read!(n: i32);
}