How can I convert char to string?

Question

This question pertains to a pre-release version of Rust. This younger question is similar.

---

I tried to print one symbol with println:

fn main() {
    println!('c');
}

But I got next error:

$ rustc pdst.rs
pdst.rs:2:16: 2:19 error: mismatched types: expected `&str` but found `char` (expected &str but found char)
pdst.rs:2     println!('c');
                          ^~~
error: aborting due to previous error

How do I convert char to string?

Direct typecast does not work:

let text:str = 'c';
let text:&str = 'c';

It returns:

pdst.rs:7:13: 7:16 error: bare `str` is not a type
pdst.rs:7     let text:str = 'c';
                       ^~~
pdst.rs:7:19: 7:22 error: mismatched types: expected `~str` but found `char` (expected ~str but found char)
pdst.rs:7     let text:str = 'c';
                             ^~~
pdst.rs:8:20: 8:23 error: mismatched types: expected `&str` but found `char` (expected &str but found char)
pdst.rs:8     let text:&str = 'c';
                                  ^~~

Answer 1

Use char::to_string, which is from the ToString trait:

fn main() {
    let string = 'c'.to_string();
    // or
    println!("{}", 'c');
}