Rust code shared from the playground

playground.rs

extern crate libc;
use libc::c_char;
use std::ffi::CString;

fn gimme_cstring_pointer() -> *const c_char {
    CString::new("hi").unwrap().as_ptr()
}

fn gimme_cstring() -> CString {
    CString::new("hi").unwrap()
}

fn main() {
    let c_string = gimme_cstring().as_ptr();
    println!("Address {:?}", c_string.as_ptr());
    unsafe {
        println!("Content {:?}", *c_string.as_ptr());
    }


    let c_string_pointer = gimme_cstring_pointer();
    println!("Address {:?}", c_string_pointer);
    unsafe {
        println!("Content {:?}", *c_string_pointer);
    }
}