printf \t 选项 [英] printf \t option

问题描述

当您在 C 中使用 printf 将制表符打印到标准输出时，它会输出一些显然长度为 4 个字符的空格.

When you are printing a tab character to the standard output using printf in C, it outputs some space which is apparently 4 characters in length.

printf("\t");

在上述情况下，有什么方法可以控制标签宽度?任何帮助或建议表示赞赏.

Is there any way by which I can control the tab width in the above case? Any help or suggestion is appreciated.

推荐答案

选项卡就是选项卡.它占用多少空间是一个显示问题，取决于您的外壳设置.

A tab is a tab. How many spaces it consumes is a display issue, and depends on the settings of your shell.

如果您想控制数据的宽度，则可以在 printf 格式字符串中使用 width 子说明符.例如.:

If you want to control the width of your data, then you could use the width sub-specifiers in the printf format string. Eg. :

printf("%5d", 2);

这不是一个完整的解决方案(如果值超过 5 个字符，则不会被截断)，但可能可以满足您的需求.

It's not a complete solution (if the value is longer than 5 characters, it will not be truncated), but might be ok for your needs.

如果您想要完全控制，您可能必须自己实施.

If you want complete control, you'll probably have to implement it yourself.

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