目录
四、代币营销手续费
五、一个完整项目代币,包括以往未实现的分红,添加流动性等
在代币销毁中一般有两种,一种是代币项目方主动销毁代币,在这种一般是代币项目方将他们持有的币打进黑洞也就是0x0000000000000000000000000000000000000000地址。就是转账到这个地址。这篇主要讲每次交易中的一定比例打进黑洞
在上一篇代码的基础上改进
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;
import "./ERC20.sol";
contract Token is ERC20{
string private _name;
string private _symbol;
address public deadwallet = 0x0000000000000000000000000000000000000000;//将代币打进这个地址就是销毁
address public LiquityWallet;
/*
* @dev 返回代币的名字
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev 返回代币的符号
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* 返回代币精度
*/
function decimals() public pure virtual returns (uint8) {
return 18;
}
constructor() public{
_name='Token';
_symbol='Tk';
_mint(msg.sender, 10000000000000 * (10 ** 18)); //铸币给连接此合约的账号于10000000000000个币;
LiquityWallet=msg.sender;
}
//交易函数
function _transfer(address recipient, uint256 amount) public returns (bool) {
if(LiquityWallet!=msg.sender) return super.transfer(recipient, amount); //如果是铸币者则不需要交易销毁
uint256 BurnWallet = amount.mul(5).div(100); //每次交易销毁百分之5
uint256 trueAmount = amount.sub(BurnWallet); //减去这百分之5就是要发送的币
super.transfer(deadwallet, BurnWallet); //打进销毁地址
return super.transfer(recipient, trueAmount); //95%就是要交易的币
}
function _transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
if(LiquityWallet!=msg.sender) return super.transfer(recipient, amount);//如果是铸币者则转账不需要销毁
uint256 BurnWallet = amount.mul(5).div(100); //每次交易销毁百分之5
uint256 trueAmount = amount.sub(BurnWallet); //减去这百分之5就是要发送的币
super.transferFrom(sender, deadwallet, BurnWallet); //这百分之5打进销毁地址
return super.transferFrom(sender, recipient, trueAmount); //95%就是要交易的币
}
}