在 Ubuntu 中编译 hello world 失败

Question

我有一个 hello world c++ 文件，编译时出现一些错误。似乎 c++ 设置出了问题。以下是我得到的结果：

root@localhost:/home/student/tmp/gios/pr4/part1# g++ -o hello example.cpp 
In file included from /usr/include/c++/7/ext/string_conversions.h:43:0,
                 from /usr/include/c++/7/bits/basic_string.h:6361,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iostream:39,
                 from example.cpp:1:
/usr/include/c++/7/cstdio:133:11: error: '::rewind' has not been declared
   using ::rewind;

该文件有以下内容：

#include <iostream>

using namespace std;

int main() 
{
    cout << "Hello, World!";
    return 0;
}

g++版本：

root@localhost:/home/student/tmp/gios/pr4/part1# g++ --version
g++ (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

清除后我重新安装，build-essentials但没有任何效果。我得到了和之前一样的错误。我应该做些什么来设置头文件吗？

谢谢。