10变量默认值
// SPDX-License-Identifier: MIT
pragma solidity 0.8.18;
contract DefaultValues{
bool public b;// false
uint public u;//0
int public i;//0
address public a; // 0x0000000000000000000000000000000000000000
bytes32 public b32; //0x0000000000000000000000000000000000000000000000000000000000000000
}