main.go

package main

/*
#import <stdio.h>
#import <stdlib.h>

static void
p(const char *c)
{
    printf("%s\n", c);
}
*/
import "C"
import "unsafe"

func main() {
	c := C.CString("Hello world")
	defer C.free(unsafe.Pointer(c))

	C.p(c)
}