C++

Finnhub API - Get Stock Quote

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Demonstrates how to get a stock quote from the Finnhub API. C++

#include <CkHttp.h>
#include <CkHttpRequest.h>
#include <CkHttpResponse.h>
#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    bool success = false;

    // Replace with your actual Finnhub API key.
    const char *apiKey = "YOUR_FINNHUB_API_KEY";
    const char *symbol = "AAPL";

    CkHttp http;

    // This is the URL without params.
    const char *urlWithoutParams = "https://finnhub.io/api/v1/quote";

    CkHttpRequest req;

    // Add params that will be sent in the URL.
    req.AddParam("symbol",symbol);
    req.AddParam("token",apiKey);

    req.put_HttpVerb("GET");

    // Send the request to get the JSON response.
    CkHttpResponse resp;
    success = http.HttpReq(urlWithoutParams,req,resp);
    if (success == false) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    CkJsonObject json;
    resp.GetBodyJson(json);

    int statusCode = resp.get_StatusCode();
    std::cout << "response status code: " << statusCode << "\r\n";

    json.put_EmitCompact(false);
    std::cout << json.emit() << "\r\n";

    // Sample result:

    // {
    //   "c": 248.8,
    //   "d": -4.09,
    //   "dp": -1.6173,
    //   "h": 255.493,
    //   "l": 248.07,
    //   "o": 253.9,
    //   "pc": 252.89,
    //   "t": 1774641600
    // }

    if (statusCode == 200) {
        // Add the symbol to the top of the result.
        json.AddStringAt(0,"symbol",symbol);

        // Rename members for clarification.
        json.Rename("c","currentPrice");
        json.Rename("d","change");
        json.Rename("dp","percentChange");
        json.Rename("h","high");
        json.Rename("l","low");
        json.Rename("o","open");
        json.Rename("pc","prevClose");
        json.Rename("t","unixTime");

        std::cout << json.emit() << "\r\n";

    }
    else {
        std::cout << "Failed" << "\r\n";
    }
    }