//define which compiler to use
pragma solidity ^0.7.0;

//contract name is MyFirstContract
contract MyFirstContract {

//create two variables.  A sting and an address

    address owner;
    string private name;

//constructor sets the creator of the contract to the owner variable
   constructor() {
      owner = msg.sender;
   }
    

//modifier checks that the caller of the function is the owner
    modifier onlyOwner() {
         require(msg.sender == owner, 'Not Owner');
         _;
    }

//set name.  Only the owner of the contract can call because a modifier is specified
    function setName(string memory newName) public onlyOwner{
        name = newName;
    }

//get the name
    function getName () public view returns (string memory) {
        return name;
    }
    

}