counter.sol

pragma solidity ^ 0.4 .24;

// simple counter program
contract Counter{
    
     address public admin;
     uint count;
     
     constructor() public{
         count = 0;
         admin = msg.sender;
     }
     
    
     function getCount() public view returns(uint _count){
         _count = count;
     }
     
     function incCounter() public {
         require(msg.sender==admin, "only admin can increase counter");
         count++;
     }
     
      function decCounter() public {
         require(msg.sender==admin, "only admin can increase counter");
         require(count>0, "Can't decrease if counter is equal to or less than 0");
         count--;
     }
    
    
}