如何在json_tokener_parse（）之后获取json值？

I have the following code

我有以下代码

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>

#include <json/json.h>

int main(int argc, char **argv)
{
      json_object *new_obj;
      char buf[] = "{ \"foo\": \"bar\", \"foo2\": \"bar2\", \"foo3\": \"bar3\" }"
      new_obj = json_tokener_parse(buf);
      printf("The value of foo is %s" /*What I have to put here?*/);
      printf("The value of foo2 is %s" /*What I have to put here?*/);
      printf("The value of foo3 is %s" /*What I have to put here?*/);
      json_object_put(new_obj);
}
#include <