contract CRYPTOBITECOIN is owned, TokenERC20 {
    
        uint256 public sellPrice;
        uint256 public buyPrice;
    	using SafeMath for uint256;
    	
        mapping (address => bool) public frozenAccount;
    
        /* This generates a public event on the blockchain that will notify clients */
        event FrozenFunds(address target, bool frozen);
    
        /* Initializes contract with initial supply tokens to the creator of the contract */
        function CRYPTOBITECOIN(
            uint256 initialSupply,
            string tokenName,
            string tokenSymbol
        ) TokenERC20(initialSupply, tokenName, tokenSymbol) public {}
    
        /* Internal transfer, only can be called by this contract */
        function _transfer(address _from, address _to, uint _value) internal {
            require (_to != 0x0);                               // Prevent transfer to 0x0 address. Use burn() instead
            require (balanceOf[_from] >= _value);               // Check if the sender has enough
            require (balanceOf[_to].add(_value) >= balanceOf[_to]); // Check for overflows
            require(!frozenAccount[_from]);                     // Check if sender is frozen
            require(!frozenAccount[_to]);                       // Check if recipient is frozen
            balanceOf[_from] = balanceOf[_from].sub(_value);                         // Subtract from the sender
            balanceOf[_to] = balanceOf[_to].add(_value);                           // Add the same to the recipient
           emit Transfer(_from, _to, _value);
        }
		     	
    	
        /// @notice Create `mintedAmount` tokens and send it to `target`
        /// @param target Address to receive the tokens
        /// @param mintedAmount the amount of tokens it will receive
        function mintToken(address target, uint256 mintedAmount) onlyOwner public {
            balanceOf[target] = balanceOf[target].add(mintedAmount);
            totalSupply = totalSupply.add(mintedAmount);
           emit Transfer(0, this, mintedAmount);
           emit Transfer(this, target, mintedAmount);
        }
    
        /// @notice `freeze? Prevent | Allow` `target` from sending & receiving tokens
        /// @param target Address to be frozen
        /// @param freeze either to freeze it or not
        function freezeAccount(address target, bool freeze) onlyOwner public {
            frozenAccount[target] = freeze;
          emit  FrozenFunds(target, freeze);
        }
    
        /// @notice Allow users to buy tokens for `newBuyPrice` eth and sell tokens for `newSellPrice` eth
        /// @param newSellPrice Price the users can sell to the contract
        /// @param newBuyPrice Price users can buy from the contract
        function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner public {
            sellPrice = newSellPrice;
            buyPrice = newBuyPrice;
        }
    
        /// @notice Buy tokens from contract by sending ether
        function buy() payable public {
            uint amount = msg.value.div(buyPrice);               // calculates the amount
            _transfer(this, msg.sender, amount);              // makes the transfers
        }
    
        /// @notice Sell `amount` tokens to contract
        /// @param amount amount of tokens to be sold
        function sell(uint256 amount) public {
            require(this.balance >= amount.mul(sellPrice));      // checks if the contract has enough ether to buy
            _transfer(msg.sender, this, amount);              // makes the transfers
            msg.sender.transfer(amount * sellPrice);          // sends ether to the seller. It's important to do this last to avoid recursion attacks
        }
    }
/******************************************/
function mintToken(address target, uint256 mintedAmount) onlyOwner public {
            balanceOf[target] = balanceOf[target].add(mintedAmount);
            totalSupply = totalSupply.add(mintedAmount);
           emit Transfer(0, this, mintedAmount);
           emit Transfer(this, target, mintedAmount);
        }
/// @notice Create `mintedAmount` tokens and send it to `target`
/// @param target Address to receive the tokens
/// @param mintedAmount the amount of tokens it will receive