FTP function misbehaviour

In the below code i given a wrong ip address to connectToHost() function after that it don't show connection error :( please help me out.

Code:

#include <QFtp>
#include <QCoreApplication>
#include <stdio.h>
 
int main(int argc,char *argv[])
{
    QCoreApplication app(argc,argv);
    QFtp *ftp = new QFtp();
    bool verify;
    verify = 0;
    printf("start ....\n");
    verify=ftp->connectToHost(QString("172.16.41"));
    if(!verify){printf("error in connecting\n");}else printf("connected \n");
    verify=ftp->login("daredevil","9232575381");
    if(!verify){printf("error in login\n");}else printf("login successfull \n");
    verify=ftp->cd("Music");
    if(!verify){printf("error in cd command\n");}else printf("cd successfull \n");
    verify = ftp->get("youtube_pRpeEdMmmQ0.flv");
    if(!verify){printf("error in get\n");}else printf("coppied \n");
    ftp->close();
    printf("successfully complete");
    app.exec();
    return 0;
}