August 2021
Intermediate to advanced
450 pages
5h 35m
Chinese
Content preview from C++语言导学（原书第2版）
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10.7 文件流
在<fstream>中，标准库提供了从文件读取数据以及向文件写入数据的流：
·ifstream用于从文件读取数据。
·ofstream用于向文件写入数据。
·fstream用于读写文件。
例如：
我们通常通过检查流的状态来检验文件流是否正确打开：
假定检验成功，ofs就可以像普通ostream一样使用（就像cout），ifs就可以像普通istream一样使用（就像cin）。
文件定位和更细致的控制文件打开的方式都是可以做到的，但已超出了本书的范围。
文件名的组成和文件系统操作的相关内容请参见10.10节。
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