pragma solidity >=0.4.22 <0.7.0;

contract Message {
    address private owner;
    string public message;
    
    constructor(string memory initialMessage) public {
	    owner = msg.sender;
        message = initialMessage;
    }

    function setMessage(string memory newMessage) public {
        message = newMessage;
    }
    
    function getMessage() public view returns (string memory) {
        return message;
    }
	
	function kill() public {
        require(msg.sender == owner);
        selfdestruct(msg.sender);
    }
}