// https://blog.peterzhu.ca/ruby-c-ext-part-1/

#include <signal.h>

#include <ruby/ruby.h>

static ID id_puts;

static void kernel_puts(VALUE val)
{
    rb_funcall(rb_mKernel, id_puts, 1, val);
}

static VALUE foo(VALUE self)
{
    raise(SIGINT);
    kernel_puts(self);

    return Qnil;
}

void Init_methods(void)
{
    id_puts = rb_intern("puts");

    rb_define_method(rb_cObject, "foo", foo, 0);
}

void Init_my_c_ext(void)
{
    ID id_puts = rb_intern("puts");

    raise(SIGINT);
    VALUE hello_world_str = rb_str_new_cstr("Hello world!");
    rb_funcall(rb_mKernel, id_puts, 1, hello_world_str);
}