ofstream不会刷新

我有以下代码，在Suse 10.1/G ++ 4.1.0上运行，并且未写入文件:

I have the following code, running on Suse 10.1 / G++ 4.1.0, and it doesn't write to the file:

#include <fstream>
#include <iostream>

int main(){
    std::ofstream file("file.out");
    file << "Hello world";
}

已正确创建并打开文件，但该文件为空. 如果我将代码更改为:

The file is correctly created and opened, but is empty. If I change the code to:

#include <fstream>
#include <iostream>

int main(){
    std::ofstream file("file.out");
    file << "Hello world\n";
}

(在文本中添加\n)，它可以正常工作. 我也尝试刷新ofstream，但是没有用.

(add a \n to the text), it works. I also tried flushing the ofstream, but it didn't work.

有什么建议吗?