需要帮助将C ++代码转换为C# [英] Need help converting C++ code to C#

问题描述

我需要将以下代码片段转换为C#，这怎么可能?

I need to convert the following code snippet into C#, how is this possible?

char south=ais_binary[89];
    temp_s=ais_binary.substr(89,27);
    bitset<27> ii(temp_s);
    if (south=='1') {ii.flip();}
    double ais_latitude=ii.to_ulong();
    ais_latitude=ais_latitude/10000/60;
    if (south=='1') {ais_latitude *= -1;}

在此先感谢

Thanks in advance

推荐答案

首先，即使是C ++，代码也不太好:
1)使用所有这些立即数(89、27，"1"等)使代码很难维护； 2)与字符"1"进行比较是表示纯逻辑的不好方法，3)未显示一些声明:ais_binary在哪里(可能是某些实现索引的类的实例)，temp_s?

缺少一些声明使直译变得不确定，但是您只需要一些想法:

• 要表示位集，请使用System.Collections.BitArray，
  请参见 http://msdn.microsoft.com/en-us/library/system.collections.bitarray.aspx [ http://msdn.microsoft.com/en-us/library/system.array. aspx [^ ]，
  http://msdn.microsoft.com/en-us/library/z50k9bft.aspx [^ ].
  
• 其他所有内容都相同:if语句，阻止…

First of all, the code is not so good even as C++:
1) use of all those immediate constants (89, 27, ''1'', etc.) makes the code very hard to maintain; 2) comparison with character ''1'' is bad way to represent pure logic, 3) some declarations are not shown: where is ais_binary (could be an instance of some class implementing indexing), temp_s?

The lack of some declarations makes literal translation uncertain, but you only need some ideas:

• To represent bit set, use System.Collections.BitArray,
  see http://msdn.microsoft.com/en-us/library/system.collections.bitarray.aspx[^].
• To get a slice of some array use the static methods <copy>System.Array.Copy. See: http://msdn.microsoft.com/en-us/library/system.array.aspx[^],
  http://msdn.microsoft.com/en-us/library/z50k9bft.aspx[^].
  
• Everything else looks the same: if statement, block…

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