是C格式化的I / O功能（printf，sprintf等）比iOStream更流行，如果是，为什么？ [英] Are the C formatted I/O functions (printf, sprintf, etc) more popular than IOStream, and if so, why?

问题描述

我一直在通过他人最近的许多代码，并发生了注意每个人都使用printf样式C函数很多，但在学校（特别是cout）学习的C ++函数似乎不那么受欢迎。

这是一个有效的观察，是否有理由呢？
Convention

感谢，

R

解决方案

就个人而言，我使用 printf over iostream

当你使用 iostream 格式化时 cout / code>，你必须< 各种古怪，如 setiosflags 和 setf 。我永远不会记得这些东西所在的命名空间，更不用说它是什么。

printf

另一个优点是

code> printf 是无状态的：与 cout 不同，我不需要记住在<$ c上调用了哪些成员函数$ c> printf ，或者标记的拜占庭控制已经被<< 这是一个很大的可读性。

I've been looking through a lot of code made by others lately and happened to notice everyone uses "printf" style C functions a lot, but the C++ functions learned in school (cout, specifically) don't seem so popular.

Is this a valid observation, and is there a reason for this? Convention?

Thanks,

R

解决方案

Personally, I use printf over the iostream stuff (like cout) because I think it's clearer.

When you do formatting with iostream, you have to << all sorts of weirdness like setiosflags and setf. I can never remember which namespace all this stuff lives in, let alone what it all does. Even when I do, I'm disappointed with how verbose and unintuitive the code looks.

The formatting options with printf may seem illegible at first, but they're concise, clearly documented in a single manual page, and common to a wide range of languages.

Another advanage is that printf is stateless: Unlike with cout, I don't need to remember which member functions have been called on printf, or which byzantine concoction of flags has been <<'ed into it. This is a big plus for readability.

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