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guaerjia / contracts...pcCoin.sol
Created August 25, 2021 02:22
Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.6.12+commit.27d51765.js&optimize=false&runs=200&gist=
pragma solidity ^0.6.0;
import "./erc20.sol";
contract pcCoin is ERC20 {
address public _owner;
uint256 _totalSupply;
mapping(address=>uint256) _balances;
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guaerjia / contracts...erc20.sol
Created August 25, 2021 02:00
Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.6.12+commit.27d51765.js&optimize=false&runs=200&gist=
pragma solidity ^0.6.0;
abstract contract ERC20 {
function totalSupply() virtual public view returns(uint totalSupply);
function balanceOf(address _owner) virtual public view returns(uint balance);
function transfer(address _to, uint _value) virtual public returns(bool success);
function transferFrom(address _from, address _to, uint _value) virtual public returns(bool success);
function approve(address _spender, uint _value) virtual public returns(bool success);
function allowance(address _owner, address _spender) virtual public view returns(uint remaining);