sample.cpp

#include <iostream>
#include "json/json.h"

using namespace std;

int main()
{
    cout << "sample.json test" << endl;

    // reading a json file
    Json input("sample.json");

    // accessing object members
    cout << "name: " << input["name"].as<string>() << endl;
    cout << "description: " << input["description"].as<string>() << endl;
    cout << "integer member: " << input["integer"].as<int>() << endl;
    cout << "float member: " << input["float"].as<float>() << endl; // you should know the type of a
                                                                    // member
    if (input["null"].getType() == Json::JTYPE_NULL)                // or you can examine it like
                                                                    // this.
        cout << "there is also a null member" << endl;

    // iterating
    cout << "array: ";
    for (Json::ArrayIterator i = input["array"].arrayBegin(); i != input["array"].arrayEnd(); i++) {
        cout << (*i)->as<int>() << ',';
    }
    cout << endl;

    // creating a json
    Json output;
    output.setType(Json::JTYPE_OBJECT);
    output["hello"] = "world";
    output["number"] = 1;             // note: 1 will be ambiguous, use 1.0 or 1L or 1.0f or ...
    for (int i = 0; i < 10; i++) {
        output["array"][i] = i + 1;
    }
    output["object"]["bool"] = true;
    output["object"]["null"].setType(Json::JTYPE_NULL);

    // writing to a file
    output.save("output.json");

    cout << "twitter test" << endl;

    // reading a json file
    Json tw("twitter_public_timeline.json");

    cout << "geo: " << tw["geo"].as<string>() << endl;

    return 0;
}