I have bitcoin in my bitcoin-qt wallet.
What do I have to do to get BCC?
Open the debug console on Bitcoin Core the wallet and export the private key of the BTC address with the balance you want to import in to the BCC ABC wallet:
dumpprivkey
Close the Bitcoin Core wallet, open the BCC ABC wallet and import the key you just exported with:
importprivkey
The wallet will rescan and import the balance from the BTC address to a BCC address.