rapidjson

#include "rapidjson/document.h"
using namespace rapidjson;
Document document;

const char* json = {
    "hello": "world",
    "t": true ,
    "f": false,
    "n": null,
    "i": 123,
    "pi": 3.1416,
    "a": [1, 2, 3, 4]
}
document.Parse(json);
const Value& a = document["a"];
for(SizeType i = 0;i<a.Size();i++)
     printf("a[%d] = %d\n",i,a[i].GetInt());
     
for(Value::ConstValueIterator itr = a.Begin();itr!=a.End();++itr)
    printf("%d",itr->GetInt());
    
for(Value::ConstMemberIterator itr=document.MemberBegin();itr!=document.MemberEnd();++itr)
    {
    }