#include <stdio.h>

int main() {
    char input[100];

    while (fgets(input, sizeof(input), stdin)) {
        printf("%s", input);
    }

    return 0;
}

use std::io::{self, Write};

fn main() {
    let mut input = String::new();
    while io::stdin().read_line(&mut input).unwrap() > 0 {
        print!("{}", input);
        input.clear();
    }
}

: repl
  BEGIN
    TIB DUP >IN !
    0 WORD COUNT TYPE
  AGAIN ;

main :: IO ()
main = do
    input <- getLine
    putStrLn input
    main

(loop (print (eval (read))))

The problem is that coding isn’t fun if all you can do is call things out of a library, if you can’t write the library yourself. If the job of coding is just to be finding the right combination of parameters, that does fairly obvious things, then who’d want to go into that as a career?