pragma solidity 0.8.7;

contract Ownable {
    // address owner;
    // NOTE: adding public will automatically create a getter
    // function for the state varaible.
    address public owner;
    
    // modifiers used to restrict access to functions
    modifier onlyOwner {
        require(msg.sender == owner, "owner address missing");
        _;
    }
     
    // don't need to pass the address in, msg.sender works here
    // constructor(address _owner){
    constructor(){
        owner = msg.sender;
    }
}