Send Ping to Yahoo! when RSS Feed is Updated

How to ping Yahoo! when an RSS feed has been updated, using the REST interface.

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#include <CkHttp.h>
#include <CkString.h>

void ChilkatSample(void)
    {

    CkHttp http;

    bool success;

    //  Any string unlocks the component for the 1st 30-days.
    success = http.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        printf("%s\n",http.lastErrorText());
        return;
    }

    //  Yahoo indicates that The REST interface:
    //  URL: http://ping.feeds.yahoo.com/rss/ping
    //  Parameter(s): u=<site or feed url>
    //  HTTP method: GET

    //  The RSS2 feed URL for blog.chilkatsoft.com is:
    //  http://blog.chilkatsoft.com/?feed=rss2

    //  Send the HTTP GET and return the content in a string.
    CkString responseText;
    responseText = http.quickGetStr("http://ping.feeds.yahoo.com/rss/ping?u=http://blog.chilkatsoft.com/?feed=rss2");

    printf("%s\n",(const char *)responseText);
    }