... and you actually don't have to hit CTRL^c to copy stuff from the terminal. It's enough to just highlight it and press the middle mousebutton somewhere else to paste the highlighted content.
Further it is a generally bad idea to hack "random" codes into the shell without thinking what those could cause. No offense meant, you should have thought about what you're doing. :-) If you're unsure, you can easily look up what a command does in the manual pages (man). For example, to find out what the command "fsck" does you can type:
$ man fsck
PS: CTRL^c in the shell does by the way send an interrupt to the executing process and terminate it eventually.