Private modifier lesson

private_modifier_lesson.sol

// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0;

contract check_private {

     // Declaring private variable 
    uint private _number =2; 

  // Can you check what is private variable
      // from the contract ? 
    function getter() public view returns(uint) 
  {
    return _number; }



            // Try to modify the value of private variable
    // inside of the contract 
    function attempt_to_modify() public returns (uint){
        return _number += 4;
    }

}

contract child is check_private {


        // By calling this function you can 
        // modify private variable
        // Not much privacy, isn't?
        function get_() public returns(uint) 
        {
                 return  attempt_to_modify();
                 }

            
}