I tried to cave small cpp file.
milenko@milenko-HP-Compaq-6830s:~$ sudo fdisk -l

Disk /dev/sda: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00024e07

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 484214783 242106368 83 Linux
/dev/sda2 484216830 488396799 2089985 5 Extended
/dev/sda5 484216832 488396799 2089984 82 Linux swap / Solaris
milenko@milenko-HP-Compaq-6830s:~$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 228G 216G 40K 100% /
none 4,0K 0 4,0K 0% /sys/fs/cgroup
udev 984M 4,0K 984M 1% /dev
tmpfs 200M 1,2M 199M 1% /run
none 5,0M 0 5,0M 0% /run/lock
none 999M 27M 972M 3% /run/shm
none 100M 48K 100M 1% /run/user

What should I do?

the root filesystem is full. You should investigate, and remove some files. Probably it is inside your home, or in /var or somewhere else, you need to know.

I have deleted some movies from Videos folder.Still with df -h I got:
df -h
Filesystem Size Used Avail Use Mounted on
/dev/sda1 228G 215G 672M 100% /
none 4,0K 0 4,0K 0% /sys/fs/cgroup
udev 984M 4,0K 984M 1% /dev
tmpfs 200M 1,2M 199M 1% /run
none 5,0M 0 5,0M 0% /run/lock
none 999M 20M 979M 2% /run/shm
none 100M 52K 100M 1% /run/user

Look for a .Trash folder in your 'home' & see if it has files in it; if so, delete them.