what should I give url?

[ChrisW67]

Please edit your post and put your code in [code] tags.

1)I dont get any error but after running it says "exited with code
1"....

This is exactly what you tell C++ to return to the operating system when main is terminating.

2) I am not getting what url should I give to connect to the FTP server
which I have installed VSFTPD server for ubuntu in my computer..PLZ
someone help me..

An FTP URL is built exactly the same way as every other URL:
http://en.wikipedia.org/wiki/Uniform_Resource_Locator
Use the "ftp:" scheme and path.

QUrl is very useful when assembing/disassembling URLs.