如何在终端中更新打印的邮件而不重新打印（Linux） [英] How to update a printed message in terminal without reprinting (Linux)

问题描述

我想为我的终端应用程序创建一个进度条，它可以工作：

I want to make a progress bar for my terminal application that would work something like:

 [XXXXXXX       ]

这将给出进程完成之前剩余时间的可视指示。

which would give a visual indication of how much time there is left before the process completes.

我知道我可以通过将更多的X添加到字符串然后只是printf来打印越来越多的X，但是看起来像是：

I know I can do something like printing more and more X's by adding them to the string and then simply printf, but that would look like:

 [XXXXXXX       ] 
 [XXXXXXXX      ] 
 [XXXXXXXXX     ] 
 [XXXXXXXXXX    ]

或类似的东西（显然你可以玩间距。）但这不是视觉审美。有没有办法用新文本更新终端中的打印文本而不重新打印？这是所有在linux，c ++。

or something like that (obviously you can play with the spacing.) But this is not visually aesthetic. Is there a way to update the printed text in a terminal with new text without reprinting? This is all under linux, c++.

推荐答案

尝试使用 \r

try using \r instead of \n when printing the new "version".

for(int i=0;i<=100;++i) printf("\r[%3d%%]",i);
printf("\n");

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