Xcode 11.1:找不到iostream'文件 [英] Xcode 11.1: iostream' file not found

问题描述

我刚刚将 MacBook Pro 更新为 macOS Catalina 10.15 ，并尝试编译并运行 C ++命令行程序，但是我已经以前版本中不存在的问题；

I just updated my MacBook Pro to macOS Catalina 10.15, and tried to compile and run a C++ command line program, but I had a problem which didn’t exist on previous versions;

这只是代码:

#include <iostream>
using namespace std;

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

代码编译并输出预期的结果，但是Xcode仍然说:

The code compiles and outputs the expected, but still the Xcode says:

fatal error: 'iostream' file not found

我尝试将内部设置/C ++标准库更改为 libstdc ++ ，但警告提示:

I tried changing the Build Settings/C++ Standard Library to libstdc++, but a warning says:

warning: include path for stdlibc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead

并且同样的iostream错误仍然存​​在.

And the same iostream error still exists.

推荐答案

因此，我重新启动了笔记本电脑，现在一切似乎都很好，感谢那些尝试提供帮助的人.

So, I restarted my laptop and everything seems to be fine right now, thanks for those who tried to help.

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