Easy 157题 Read N Characters Given Read4

最新推荐文章于 2023-12-22 02:10:49 发布
最新推荐文章于 2023-12-22 02:10:49 发布
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该博客讨论如何使用只读取4个字符的API（Read4）来实现读取文件中n个字符的功能。文章提出了解决方案，并提及需要更新内部缓冲区的内容。

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Question:

The API: int read4(char *buf) reads 4 characters at a time from a file.

The return value is the actual number of characters read. For example, it returns 3 if there is only 3 characters left in the file.

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