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contracts...16_Person.sol

pragma solidity 0.8.11;

contract Persons {

    uint public peopleCounter;

    struct Person {
        string firstName;
        string lastName;
        address PersonAddress;
    }

    mapping(address => Person) public peopleList;

    function addPerson(string memory _firstName, string memory _lastName) public {
        peopleList[msg.sender] = Person(_firstName, _lastName, msg.sender);
        peopleCounter ++;
    }
}