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contracts...globalvariable.sol

//SPDX-License-Identifier: MIT

pragma solidity ^0.8;

contract gloablVariable{
    //predefined variable used in workspace is global variable 
    address public addr =  msg.sender;
    uint public timestamp =  block.timestamp;
    uint public diff = block.difficulty;
    uint public gasprice = tx.gasprice;
}