跟我一起阅读并修复源码（3：编译工程，源码分析）之六

在上一章跟我一起阅读并修复某知名DEX交易所源码（3：编译工程，源码分析）之五_lixiaodog的博客-优快云博客

中我们详细分析了 contract MdexPair的源码，本章将继续编译的进程，来吧，少年，出发吧！！

输入编译命令truffle compile

project:/contracts/mainnet/CoinChef.sol:48:43: TypeError: Operator ** not compatible with types int_const 100 and int_const 1000000000000000000
    uint256 public constant mdxPerBlock = 100 ** 1e18;

**运算符无法用于这两个常数，我认为应该是写错了，修改为:

uint256 public constant mdxPerBlock = 100*10**18;

每区块产量100个。如果是100**1E18 ,是个多大的数大家可以想像。

再次编译，如下图：

> Duplicate contract names found for TransferHelper.
> This can cause errors and unknown behavior. Please rename one of your contracts.

> Duplicate contract names found for IWHT.
> This can cause errors and unknown behavior. Please rename one of your contracts.

> Duplicate contract names found for TransferHelper.
> This can cause errors and unknown behavior. Please rename one of your contracts.

> Duplicate contract names found for MdxToken.