This is a parsing example for the udp/json-parser which can be found here: (https://github.com/udp/json-parser.) This parser allows for easy parsing of a JSON file in C++. --- The sample JSON file is an example using the old Facebook Graph API

json-parser-example.json

{
   "data": [
      {
         "birthday": "01/01/2000",
         "first_name": "John",
         "last_name": "Doe",
         "hometown": {
            "name": "Tampa, Florida"
         },
      },
      {
         "birthday": "03/01/2000",
         "first_name": "Jane",
         "last_name": "Doe",
         "hometown": {
            "name": "Gainesville, Florida"
         },
      }
    ],
  "paging": {
      "next": "<theAPIURL>"
   }
}

json-parser.cpp

// This filename is passed into whichever method this is in!
ifstream fileInput(filename.c_str());

if(!fileInput.is_open()){
	cout << "Whoops! Something went wrong. Please check your input." << endl;
}

else{
	string inputStr((istreambuf_iterator<char>(fileInput)), istreambuf_iterator<char>());
	json_value data = * json_parse(inputStr.c_str());
	json_value *list = data.u.object.values[0].value;
	const int length = list->u.array.length;
	json_value **array = data.u.object.values[0].value->u.array.values;
	Person parsePersons[length];
	int curIndex = 0;
	for(int i = 0; i < length; i++){
		for(int j = 0; j < array[i]->u.object.length; j++){
			if (!strcmp(array[i]->u.object.values[j].name, "birthday")) {
				cout << "Birthday: " << array[i]->u.object.values[j].value->u.string.ptr << endl;
			}

			else if(!strcmp(array[i]->u.object.values[j].name, "first_name") && array[i]->u.object.values[j].value->type != json_null){
				cout << "First Name: " << array[i]->u.object.values[j].value->u.string.ptr << endl;
			}

			else if(!strcmp(array[i]->u.object.values[j].name, "last_name") && array[i]->u.object.values[j].value->type != json_null){
				cout << "Last Name: " << array[i]->u.object.values[j].value->u.string.ptr << endl;
			}

			else if(!strcmp(array[i]->u.object.values[j].name, "hometown") && array[i]->u.object.values[j].value->type != json_null){
				cout << "Hometown: " << array[i]->u.object.values[j].value->u.object.values[1].value->u.string.ptr << endl;
			}

		}
	}
}

Thank you!