c++ - C++ EOF Getline Error

Question

I was using the form used in one of the related questions. Only problem is that i keep getting right at the end of the file.

The file is an fstream and the str is a string.

Unhandled exception Microsoft C++ exception: std::ios_base::failure

while (getline(file, str)) 
{


}

if (cin.bad()) {
    // IO error
} else if (!cin.eof()) {
    // format error (not possible with getline but possible with operator>>)
} else {
    // format error (not possible with getline but possible with operator>>)
    // or end of file (can't make the difference)
}

Answer 1

如果您std::ios_base::failure抛出异常，很可能是由您（或您正在使用的某些代码）为您的文件打开它们引起的。它们应该默认关闭。只是为了测试，您可以尝试在 while 循环之前立即关闭它们，但您可能需要调查是什么打开了它们。

file.exceptions(std::ios_base::goodbit);