pragma solidity ^0.5.2;
pragma experimental ABIEncoderV2;

contract voter {
    uint[] public votes;
    //store votes .. array of integers
    string[] public options;
    //option for which a user can cast a vote
    mapping (address => bool) hasVoted;


    constructor(string[] memory _options) public {
        options = _options;
        votes.length = options.length;

    }

    function vote(uint option) public {
        require(0 <= option && option < options.length, "Invalid option");
        require(!hasVoted[msg.sender], "account has already voted" );
        votes[option] = votes[option]  + 1;
        hasVoted[msg.sender] = true;

    }

    function getOptions() public view returns (string[] memory ){

        return options;
    }
    function getVotes() public view returns (uint[] memory) {
        return votes;

    }

}