extern crate c_rs;
use c_rs::c;
use c_rs::ctypes::*;
use c_rs::str_to_char_ptr;

c!{
    #include <stdio.h>
}
      
extern "C" {
        fn puts(_arg: *const _char) -> _void; //getting puts function from C's stdio
}
        
fn main() {
      unsafe{  //all functions from c macro are unsafe
            puts(str_as_char_ptr!("Hello, World!"));  // C's "char" type is an eight-bit integer, so "*const i8" in Rust == "char*" in C
        }
}