stdio vs iostream [英] stdio vs iostream

问题描述

当我在互联网上搜索这两个库之间的区别时，每个人都说< iostream> 是C ++和<$ c的标准I / O库我的教授说， cin>> 和 cout<< cstdio> 不是好的函数，如果我们使用 cin>> 很多次我们的应用程序肯定会崩溃。他还说， stdio 提供的输入和输出速度比 iostream 快近3倍。但是，我更喜欢使用 iostream ，因为它更方便，我也不知道我的教授是否是对的。

When I search on the internet for the difference between these two libraries, everyone says that <iostream> is the standard I/O library of C++ and <cstdio> is for C. My professor says that cin>> and cout<< are not good functions and if we use cin>> many times our application will definitely crash. He also says that stdio provides nearly 3 times faster input and output than iostream. However, I prefer using iostream because it is more convenient, and also I don't know if my professor is right.

那么你建议我使用什么？

So what do you advise me to use?

推荐答案

使用 iostream 不应该让你的程序崩溃。它可能很慢，但这只是因为它试图与 stdio 进行互操作。该同步可以关闭 ¹ 。 iostream 是惯用的C ++方式来获取输入，我建议在大多数情况下使用 stdio 使用C ++。

Using iostream should not make your program crash. It can be slow, but that's only because it's trying to interoperate with stdio. That synchronization can be turned off¹. iostream is the idiomatic C++ way to get input, and I'd recommend its use over stdio functions in most cases when using C++.

¹ 使用 std :: ios :: sync_with_stdio（false）;

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