Solidity

使用 MEW 測試自定義 ERC20 代幣

  • July 13, 2017

在提問之前,我想列出我的開發環境配置:

  • 我正在使用 Remix 線上 Solidity IDE 進行編碼
  • 我的契約正在使用 RPC 的本地 PC 上執行(Remix 中的 web3 提供程序選項)
  • 我設置 MEW 在我的 http:127.0.0.1:8545 節點上執行

我設法部署了我的 ERC20 代幣合約,將其添加到顯示該賬戶目前金額的 MEW 列表中;然而,即使在合約中我將 10000000 設置為代幣的初始供應量,MEW 仍將“0.000 1e-11 RC”顯示為總量。我錯過了什麼?

編碼:

pragma solidity ^0.4.0;

contract UnclearlyToken {

   string public constant name = "Unclearly";
   string public constant symbol = "UC";
   uint8 public constant decimals = 18;
   uint totalAmount = 10000000;

   mapping (address => uint256) public balances;
   mapping(address => mapping (address => uint256)) allowed;

   event Transfer(address indexed _from, address indexed _to, uint _value);
   event Approval(address indexed _owner, address indexed _spender, uint _value);

   function UnclearlyToken() {
       balances[msg.sender] = totalAmount;
   }

   function totalSupply() constant returns(uint) {
       return totalAmount;
   }

   function balanceOf(address _owner) constant returns(uint256) {
       return balances[_owner];
   }

   function transfer(address _to, uint _value) returns (bool success) {
       if(balances[msg.sender] >= _value 
           && _value > 0 
           && balances[_to] + _value > balances[_to]) {

           balances[msg.sender] -= _value;
           balances[_to] += _value;
           Transfer(msg.sender, _to, _value);

           return true;
       }
       return false;
   }

   function transferFrom(address _from, address _to, uint _value) returns (bool success) {
       if(balances[_from] >= _value
           && _value > 0 
           && balances[_to] + _value > balances[_to]
           && allowed[_from][msg.sender] >= _value) {

           balances[_from] -= _value;
           balances[_to] += _value;
           Transfer(_from, _to, _value);

           return true;
       }
       return false;
   }

   function approve(address _spender, uint _value) returns (bool success) {
       allowed[msg.sender][_spender] = _value;
       Approval(msg.sender, _spender, _value);

       return true;
   }

   function allowance(address _owner, address _spender) constant returns (uint remaining) {
       return allowed[_owner][_spender];
   }
}

水電側:

在此處輸入圖像描述

好的,對不起這個問題,這很簡單。您只需要更改令牌的小數。有關更多詳細資訊,請參閱此討論:Float not allowed in solidity vs decimal places ask for token contract

引用自:https://ethereum.stackexchange.com/questions/21132