从零教你学习B·S·C｜Solidity

一、安装环境
1、在chrome浏览器安装MetaMask插件

2、安装插件
安装方法，下载后解压，在浏览器输入chrome://extensions/，将安装文件拖拽进浏览器，即可安装

二、发布合约
进入到remix进行
http://remix.ethereum.org 这是编辑器网址

在此是需要已经安装Chrome插件的

1、合约模版

pragma solidity ^0.4.16;

interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }

contract TokenERC20 {
string public name;
string public symbol;
uint8 public decimals = 18; // 18 是建议的默认值
uint256 public totalSupply;

mapping (address => uint256) public balanceOf; //
mapping (address => mapping (address => uint256)) public allowance;

event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Burn(address indexed from, uint256 value);

function TokenERC20(uint256 initialSupply, string tokenName, string tokenSymbol) public {
totalSupply = initialSupply * 10 ** uint256(decimals);
balanceOf[msg.sender] = totalSupply;
name = tokenName;
symbol = tokenSymbol;
}

function _transfer(address _from, address _to, uint _value) internal {
require(_to != 0x0);
require(balanceOf[_from] >= _value);
require(balanceOf[_to] + _value > balanceOf[_to]);
uint previousBalances = balanceOf[_from] + balanceOf[_to];
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
Transfer(_from, _to, _value);
assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}

function transfer(address _to, uint256 _value) public returns (bool) {
_transfer(msg.sender, _to, _value);
return true;
}

function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
require(_value <= allowance[_from][msg.sender]); // Check allowance
allowance[_from][msg.sender] -= _value;
_transfer(_from, _to, _value);
return true;
}

function approve(address _spender, uint256 _value) public
returns (bool success) {
allowance[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}

function approveAndCall(address _spender, uint256 _value, bytes _extraData) public returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}

function burn(uint256 _value) public returns (bool success) {
require(balanceOf[msg.sender] >= _value);
balanceOf[msg.sender] -= _value;
totalSupply -= _value;
Burn(msg.sender, _value);
return true;
}

function burnFrom(address _from, uint256 _value) public returns (bool success) {
require(balanceOf[_from] >= _value);
require(_value <= allowance[_from][msg.sender]);
balanceOf[_from] -= _value;
allowance[_from][msg.sender] -= _value;
totalSupply -= _value;
Burn(_from, _value);
return true;
}
}

2、进入编辑网站
代码不需要修改

点击“Deploy”按钮

3、提交
点击“Create”后，就可以看到MetaMask弹出的“CONFIRM TRANSACTION”的页面，这个页面是用来确认发送的，点击“CONFIRM”确认提交。

点击刚刚发布的智能合约地址，就会调转到区块链浏览器，耐性等待智能合约的创建。

下图则为你的合约地址，然后查看合约的具体信息

————————————————
版权声明：本文为CSDN博主「zgsdzczh」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/zgsdzczh/article/details/114685029

 

 

 

本文由 我爱PHP169 作者：admin 发表，其版权均为 我爱PHP169 所有，文章内容系作者个人观点，不代表 我爱PHP169 对观点赞同或支持。如需转载，请注明文章来源。