我要用cerr [英] Shall I use cerr

问题描述

是否在良好的风格下使用cerr在下面描述的情况？

Is it in good style do use cerr in situation described below?

try
    {
    cout << a + b;
    }
    catch(const IntException& e)
    {
        cerr << "Exception caught: " << typeid(e).name(); //using cerr not cout
    }
    catch(...)
    {
        cerr << "Unknown exception.";//using cerr not cout
    }

用过的？请参阅代码中的注释。

or cout should be used? See comments in code.

推荐答案

stderr 错误消息（所以OS / shell /任何可以捕获错误消息分开正常输出），所以是，使用 std :: cerr ！

stderr is the traditional stream to send error messages (so that the OS/shell/whatever can capture error messages separately from "normal" output), so yes, use std::cerr!

我没有评论是否捕获异常只是打印出来，只是让异常传播出你的应用程序...

I make no comment as to whether catching an exception simply to print it out is any better than simply letting the exception propagating out of your application...

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