classwork

counter.sol

//SPDX-License-Identifier: MIT
pragma solidity 0.8.7;

contract Counter {
    uint public count;
    uint timestop = block.timestamp + 30;

    function inc() public {
        count ++;
    }
   
    function dec() public {
        count --;
    }
    
    function get() public view returns (uint) {
        return count;
    }
    
     modifier timer() {
      require(block.timestamp <= timestop, "your time is up");
        _;
    }

    function Time() public view returns (uint e) {
        e = timestop - block.timestamp;
        return e;
    }
}