diyici

.gitattributes

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+*.psd filter=lfs diff=lfs merge=lfs -text

week1-1/Counter.sol

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+// SPDX-License-Identifier: GPL-3.0
+
+pragma solidity >=0.7.0 <0.9.0;
+
+contract Counter{
+    uint256  public counter;
+    //constructor Counter() {}
+    function add() public  returns(uint256)  {
+        counter = counter + 1;
+        return counter;
+    }
+}

week2-1/Bank.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+contract Bank{
+    //地址到余额的映射
+    mapping (address=>uint256) private balances;
+
+    //存款事件
+    event Deposit(address indexed account,uint256 amount);
+
+    //取钱事件
+    event Withdrawal(address indexed account,uint256 amount);
+
+    //存款函数
+    function deposit() public payable{
+        require(msg.value>0,"Deposit amount must be greater than 0.");
+        balances[msg.sender] += msg.value ;
+        emit Deposit(msg.sender,msg.value);
+    }
+
+    //取钱函数
+    function withdraw(uint256 amount)public payable {
+        require(amount>0,"Withdrawal amount must be greater than 0.");
+        require(balances[msg.sender]>amount,"Insufficient balance.");
+        balances[msg.sender]-=amount;
+        payable(msg.sender).transfer(amount);
+        emit Withdrawal(msg.sender,amount);
+    }
+
+
+    //查看余额函数 
+    function getBalances() public view returns(uint256) {
+        return balances[msg.sender];
+    }
+
+}

week2-2/Score_manage.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+interface IScore{
+    function setScore(address student,uint8 score) external;
+}
+
+contract Score is IScore{
+    //老师地址变量
+    address public teacher;
+    //学生地址映射分数
+    mapping(address=>uint8) scores;
+    constructor (){
+        teacher=msg.sender;
+    }
+
+    //仅老师操作
+    modifier onlyTeacher(){
+        require(msg.sender == teacher,"only teacher can add or update scores!");
+        _;
+    }
+
+    //添加学生分数，且不可以大于100
+    function setScore(address student,uint8 score)public override onlyTeacher {
+        require(score<=100,"score must be less than or equal 100.");
+        scores[student]=score;
+    }
+}
+
+
+contract Teacher{
+    IScore public scoreContract;
+    //通过接口调用修改合约分数
+    constructor (address scoreAddress){
+        scoreContract =IScore(scoreAddress);
+    }
+    function updateScore(address student,uint8 score)public{
+        scoreContract.setScore(student,score);
+    }
+
+}

week3-1/myerc20/MyERC20 .sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.4;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+
+contract MyERC20 is ERC20 {
+    constructor() ERC20(unicode"YHB_Token", "CAMP2_YHB") {
+        _mint(msg.sender, 10000 * 10 *18);
+    }
+}

week3-1/myerc20/deploy.js

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+// We require the Hardhat Runtime Environment explicitly here. This is optional
+// but useful for running the script in a standalone fashion through `node <script>`.
+//
+// You can also run a script with `npx hardhat run <script>`. If you do that, Hardhat
+// will compile your contracts, add the Hardhat Runtime Environment's members to the
+// global scope, and execute the script.
+const { ethers } = require("hardhat");
+
+// const { deploy } = require('@openzeppelin/hardhat-upgrades')
+
+async function main () {
+  const MyERC20 = await ethers.getContractFactory('MyERC20')
+  const myERC20 = await MyERC20.deploy();
+  await myERC20.deployed();
+
+  console.log('MyERC20 deployed to:', myERC20.address)
+}
+
+// We recommend this pattern to be able to use async/await everywhere
+// and properly handle errors.
+main().catch((error) => {
+  console.error(error);
+  process.exitCode = 1;
+});

week3-1/myerc20/hardhat.config.js

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+require("@nomicfoundation/hardhat-toolbox");
+const Mnemonic = "uncover couple velvet climb predict reject eyebrow border inner fork galaxy soup";
+
+/** @type import('hardhat/config').HardhatUserConfig */
+module.exports = {
+  networks: {
+    // goerli: {
+    //   url: "https://eth-goerli.api.onfinality.io/public",
+    //   accounts: [PRIVATE_KEY1,PRIVATE_KEY2],
+    //   chainId: 5,
+    // },
+
+     mumbai: {
+      url: "https://endpoints.omniatech.io/v1/matic/mumbai/public",
+      accounts: {
+        mnemonic: Mnemonic,
+      },
+      chainId: 80001,
+    },
+  },
+  solidity: "0.8.18",
+};