如何在 C++ 中到达.eof() 后 go 回到文件的开头？

Question

I just tried this , but don't work, maybe because I'm reading character by character?我刚试过这个，但不工作，也许是因为我正在逐字阅读？

char character;

while (!file.eof()) {

    character = file.get();
    cout << character;

}

Answer 1

Did you try the accepted answer?您是否尝试过接受的答案？ The call to clear is the key. clear呼叫是关键。

Answer 2

OK, it works.好的，它有效。 The trick is call诀窍是打电话

file.clear();
file.seekg(0, ios::beg);

just after the iteration.就在迭代之后。 Sorry:(对不起：（

Answer 3

If your input is a stream (data piped in from another program) then you will not be able to seek.如果您的输入是 stream（从另一个程序输入的数据），那么您将无法搜索。