27 lines
624 B
Solidity
27 lines
624 B
Solidity
|
pragma solidity >=0.5.2 <0.9.0;
|
||
|
|
|
||
|
|
contract Quiz {
|
||
|
|
string public question;
|
||
|
|
bytes32 internal _answer;
|
||
|
|
mapping (address => bool) internal _leaderBoard;
|
||
|
|
|
||
|
|
constructor(string memory _qn, bytes32 _ans) {
|
||
|
|
question = _qn;
|
||
|
|
_answer = _ans;
|
||
|
|
}
|
||
|
|
|
||
|
|
function sendAnswer(bytes32 _ans) public returns (bool){
|
||
|
|
return _updateLeaderBoard(_answer == _ans);
|
||
|
|
}
|
||
|
|
|
||
|
|
function _updateLeaderBoard(bool ok) internal returns (bool){
|
||
|
|
_leaderBoard[msg.sender] = ok;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
function checkBoard() public view returns (bool){
|
||
|
|
return _leaderBoard[msg.sender];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|