1 use std::os::raw::c_int; 2 3 extern "C" { cx() -> c_int4 pub fn cx() -> c_int; cy() -> c_int5 pub fn cy() -> c_int; 6 } 7 main()8 fn main() { 9 println!("hi {} {}", unsafe { cx() }, unsafe { cy() }); 10 } 11