(C++) Synchronize Local Directory Tree

Downloads files from the FTP server to a local directory tree. Synchronization modes include:

mode=0: Download all files
mode=1: Download all files that do not exist on the local filesystem.
mode=2: Download newer or non-existant files.
mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server..
mode=5: Download only missing files or files with size differences.
mode=6: Same as mode 5, but also download newer files.
mode=99: Do not download files, but instead delete remote files that do not exist locally.

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#include <CkFtp2.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkFtp2 ftp;

    ftp.put_Hostname("ftp.example.com");
    ftp.put_Username("login");
    ftp.put_Password("password");

    ftp.put_KeepSessionLog(true);

    // Connect and login to the FTP server.
    bool success = ftp.Connect();
    if (success != true) {
        std::cout << ftp.lastErrorText() << "\r\n";
        return;
    }

    // Set the current remote directory to the root of
    // the tree to be downloaded.
    success = ftp.ChangeRemoteDir("/subDir1");
    if (success != true) {
        std::cout << ftp.lastErrorText() << "\r\n";
        return;
    }

    // Recursively download all non-existant and newer files.
    int mode = 2;
    success = ftp.SyncLocalTree("c:/temp/subDir1",mode);
    if (success != true) {
        std::cout << ftp.lastErrorText() << "\r\n";
        return;
    }

    success = ftp.Disconnect();

    // Display the session log.  
    std::cout << ftp.sessionLog() << "\r\n";
    }