在C ++中重置ifstream对象的文件结束状态 [英] Resetting the End of file state of a ifstream object in C++

问题描述

我想知道是否可以在C ++中重置eof状态？

I was wondering if there was a way to reset the eof state in C++?

推荐答案

对于文件，您可以只是寻找任何位置。例如，倒退到开头：

For a file, you can just seek to any position. For example, to rewind to the beginning:

std::ifstream infile("hello.txt");

while (infile.read(...)) { /*...*/ } // etc etc

infile.clear();                 // clear fail and eof bits
infile.seekg(0, std::ios::beg); // back to the start!

如果您已读完结尾，则必须使用 clear（），如@Jerry Coffin建议。

If you already read past the end, you have to reset the error flags with clear() as @Jerry Coffin suggests.

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