solidity基础（制作以太坊钱包合约）

Posted 2023-03-08 泠泠在路上

//存取主币
contract EtherWallet
   address payable public owner;
   constructor()
    owner=payable(msg.sender);
   
   receive() external payable
   //提取
   function withdraw(uint _amount) external
     //不是当前用户就报错
       require(msg.sender==owner,"caller is not owner");
       payable(msg.sender).transfer(_amount);
   
   //获取余额
   function getBalance() external view returns (uint)
       return address(this).balance;