1.函数想返回 msg.sender 怎么返回?
想把msg.sender 换成 string ,奈何无法转换,直接返回 uint 又不行
pragma solidity ^0.5.12; contract student_daka{ uint public TotalCount ; struct stu{ string namee; string timee; string timess; } string public xx ; uint public x = uint(msg.sender); //stu[] public stuss; //mapping(uint => uint )public stu_times; function search() public returns (uint){ //string memory ss = msg.sender; //return "xxxxxxxxxxxxsss"; return uint(msg.sender); } }