Mruby hello world interpreting

gistfile1.cpp

#include <iostream>
#include <mruby.h>
#include <mruby/proc.h>
#include <mruby/compile.h>

void eval_expanded(mrb_state *mrb, char code[]) {
  struct mrb_parser_state *p;
  mrbc_context *context = mrbc_context_new(mrb);
  p = mrb_parse_string(mrb, code, context);
    
  int n = mrb_generate_code(mrb, p);
  mrb_run(mrb, mrb_proc_new(mrb, mrb->irep[n]), mrb_top_self(mrb));
}

void eval(mrb_state *mrb, char code[]) {
  mrb_load_string(mrb, code);
}

int main(int argc, const char * argv[])
{
  mrb_state *mrb = mrb_open();
  char code[] = "p 'hello from ruby world!'";
  eval(mrb, code);
  std::cout << "hello from c++ world!" << std::endl;
  return 0;
}