February 10, 2018 14:36 · Feb 10, 2018
diff --git a/ERC20.sol b/ERC20.sol
@@ -0,0 +1,13 @@
+pragma solidity ^0.4.16;
+
+interface ERC20 {
+
+ function totalSupply() public constant returns (uint);
+ function balanceOf(address tokenOwner) public constant returns (uint balance);
+ function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
+ function transfer(address to, uint tokens) public returns (bool success);
+ function approve(address spender, uint tokens) public returns (bool success);
+ function transferFrom(address from, address to, uint tokens) public returns (bool success);
+ event Transfer(address indexed from, address indexed to, uint tokens);
+ event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
+ }
diff --git a/HealthToken.sol b/HealthToken.sol
@@ -0,0 +1,62 @@
+pragma solidity ^0.4.18;
+
+import './ERC20.sol';
+
+contract HealthToken is ERC20  {
+
+    string public constant name = "HealthToken";
+    string public constant symbol = "HLT";
+    uint256 public constant decimals = 18;  
+    uint public constant _totalSupply = 720000000;
+    mapping(address => mapping(address => uint256)) allowed;
+    mapping(address => uint256) balances;
+
+function HealthToken(){
+    balances[msg.sender] = _totalSupply;
+}    
+function totalSupply() constant returns (uint256 totalSupply){
+    return _totalSupply;
+
+}
+ function balanceOf(address _owner) constant returns (uint256 balance){
+     return balances[_owner];  
+ }
+
+ function transfer(address _to, uint256 _value) returns (bool success){
+     require(
+         balances[msg.sender] >= _value 
+         && _value > 0 
+         );
+         balances[msg.sender] -= _value;
+         balances[_to] += _value;
+         Transfer(msg.sender,_to, _value);
+         return true; 
+
+ }
+ function transferFrom(address _from, address _to, uint256 _value)  returns (bool success){
+     require(
+    allowed[_from][msg.sender] >= _value
+     && balances[_from] >= _value
+     && _value > 0 
+     );
+
+     balances[_from] -= _value;
+     balances[_to] += _value;
+     allowed[_from][msg.sender] -= _value;
+     Transfer(_from, _to, _value);
+     return true;
+         }
+ function approve(address _spender, uint256 _value) returns (bool success){
+     allowed[msg.sender][_spender] = _value;
+     Approval(msg.sender, _spender, _value);
+     return true;
+ }
+
+  function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
+       return allowed[_owner][_spender];
+    }
+
+ event Transfer(address indexed from, address indexed to, uint tokens);
+ event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
+
+}
diff --git a/ballot.sol b/ballot.sol
@@ -0,0 +1,65 @@
+pragma solidity ^0.4.0;
+contract Ballot {
+
+    struct Voter {
+        uint weight;
+        bool voted;
+        uint8 vote;
+        address delegate;
+    }
+    struct Proposal {
+        uint voteCount;
+    }
+
+    address chairperson;
+    mapping(address => Voter) voters;
+    Proposal[] proposals;
+
+    /// Create a new ballot with $(_numProposals) different proposals.
+    function Ballot(uint8 _numProposals) public {
+        chairperson = msg.sender;
+        voters[chairperson].weight = 1;
+        proposals.length = _numProposals;
+    }
+
+    /// Give $(toVoter) the right to vote on this ballot.
+    /// May only be called by $(chairperson).
+    function giveRightToVote(address toVoter) public {
+        if (msg.sender != chairperson || voters[toVoter].voted) return;
+        voters[toVoter].weight = 1;
+    }
+
+    /// Delegate your vote to the voter $(to).
+    function delegate(address to) public {
+        Voter storage sender = voters[msg.sender]; // assigns reference
+        if (sender.voted) return;
+        while (voters[to].delegate != address(0) && voters[to].delegate != msg.sender)
+            to = voters[to].delegate;
+        if (to == msg.sender) return;
+        sender.voted = true;
+        sender.delegate = to;
+        Voter storage delegateTo = voters[to];
+        if (delegateTo.voted)
+            proposals[delegateTo.vote].voteCount += sender.weight;
+        else
+            delegateTo.weight += sender.weight;
+    }
+
+    /// Give a single vote to proposal $(toProposal).
+    function vote(uint8 toProposal) public {
+        Voter storage sender = voters[msg.sender];
+        if (sender.voted || toProposal >= proposals.length) return;
+        sender.voted = true;
+        sender.vote = toProposal;
+        proposals[toProposal].voteCount += sender.weight;
+    }
+
+    function winningProposal() public constant returns (uint8 _winningProposal) {
+        uint256 winningVoteCount = 0;
+        for (uint8 prop = 0; prop < proposals.length; prop++)
+            if (proposals[prop].voteCount > winningVoteCount) {
+                winningVoteCount = proposals[prop].voteCount;
+                _winningProposal = prop;
+            }
+    }
+}