C++读/写大于 ~50,000 个字符
我有一个程序，基本上写这样的字符
wchar_t c[5] = {static_cast<wchar_t>(x1), static_cast<wchar_t>(x2), static_cast<wchar_t>(x3), static_cast<wchar_t>(x4)};
fileWriter->Write(msclr::interop::marshal_as<String^>(c));
然后将它们输入回程序中
String^ fileContent = fileReader->ReadToEnd();
我的问题是当 x1/x2/x3/x4 具有某个大数字的整数值时（我不能确定（但我认为当它超过 50,000 时）它会读入值为 65533 的字符。
我搞乱了 StreamReader 和 StreamWriter 编码值，但我将它们设置为 System::Text::首先编码::Unicode，不明白为什么这不起作用...
我什至不确定它是否错误地写入了符号或读取了它...当我打开它创建的文本文件时，它们'对于我的电脑来说，这些都是无法读取的字符...我真的不知道该怎么办。有谁知道我在这里做错了什么？
I've got a program that basically writes characters like this
wchar_t c[5] = {static_cast<wchar_t>(x1), static_cast<wchar_t>(x2), static_cast<wchar_t>(x3), static_cast<wchar_t>(x4)};
fileWriter->Write(msclr::interop::marshal_as<String^>(c));
And then later has them input back into the program with just
String^ fileContent = fileReader->ReadToEnd();
My problem is when x1/x2/x3/x4 have an integer value of some large number (I can't be sure which, but I think it's somewhere around when it goes above 50,000) it then reads in the character with a value of 65533.
I have messed about with the StreamReader and StreamWriter encoding values, but I have them set to System::Text::Encoding::Unicode at first and can't see why that wouldn't work...
I'm not even sure if it's writing the symbol incorrectly or reading it... When I open the text file that it creates, they're all unreadable characters for my PC... I'm really at a loss for ideas. Does anyone know what I'm doing wrong here?
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Unicode 常见问题解答“什么是代理项？”可能涵盖了这一点。完全不清楚你实际上想要完成什么，但听起来你应该使用 FileStream 而不是 StreamWriter。字节和字符不可互换。
This is probably covered by the Unicode FAQ "What is a surrogate?" It is completely unclear what you are actually trying to accomplish but it sure sounds like you should use a FileStream and not a StreamWriter. Bytes and characters are not interchangeable.