英语语法分析

So strlen is the length of a string.

所以strlen就是字符串的长度。

A common use of strlen is to estimate display-width.

strlen的一种常见用法是估算显示宽度。

You may receive error messages about strcasecmp as well as about strlen being undeclared.

您可能会收到有关strcasecmp以及strlen未声明的错误消息。