Homework initial upload

voting.sol

@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+pragma solidity ^0.8.0;
+
+contract voting {
+
+    struct Voter {
+        bool hasVoted;
+        bool exists;
+    }
+
+    struct Option {
+        uint voteCount;
+        bool exists;
+    }
+
+    mapping(string => Option) public options;
+    mapping(address => Voter) public voters;
+
+    constructor() public {
+        options["nft"]      = Option(0, true);
+        options["token"]	= Option(0, true);
+        options["dao"]	    = Option(0, true);
+        voters[0x5B38Da6a701c568545dCfcB03FcB875f56beddC4] = Voter(false, true); // repeat for all voters
+    }
+
+    function vote(string memory _option) public {
+        require(voters[msg.sender].exists = true);
+        require(voters[msg.sender].hasVoted = false);
+        require(options[_option].exists = true);
+        options[_option].voteCount = options[_option].voteCount + 1;
+        voters[msg.sender].hasVoted = true;
+    }
+
+    function getVoteCount(string memory _option) private view returns (uint) {
+        return options[_option].voteCount;
+    }
+
+    function determineWinner() public view returns (string memory){
+        if (getVoteCount("nft") > getVoteCount("token") && getVoteCount("nft") > getVoteCount("dao")) {
+            return "nft";
+        } else if (getVoteCount("token") > getVoteCount("nft") && getVoteCount("token") > getVoteCount("dao")) {
+            return "token";
+        } else if (getVoteCount("dao") > getVoteCount("nft") && getVoteCount("dao") > getVoteCount("token")) {
+            return "dao";
+        } 
+        else return "manual tiebreaker required";
+    }
+}