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contracts...requirefunctionality.sol

//SPDX-License-Identifier: MIT

pragma solidity ^0.8;

contract Require{
    address public owner = msg.sender;
    uint public age = 25;
    //when require condition is false than execution stopped and previously set the state variable goes to reset state
    // and refund the gas fee.
    function CheckAge(uint _x) public{
        age = age + 5;
        require(_x>2,"X values is less than 2");
    }
    //when require condition is false than execution stopped and previously set the state variable goes to reset state
    // and refund the gas fee.
    function onlyOwner() public{
        require(owner == msg.sender,"You are not the owner");
        age = age +2 ;
    }


}