c++ - 如果您从终端终止程序，打开的 ofstream 对象会发生什么？

Question

首先，我使用的是 Shell 终端，所以我通过 Ctrl-C 来终止程序。假设我有这段代码:

#include <iostream>
#include <fstream>
using namespace std;

int main (){

  ofstream ofs("testing.txt");

  for (unsigned int i=0;;i++){
    ofs << i << endl;
  }
}

此程序会将每个自然数保存在一个文件中，直到我将其终止。我的问题是:当程序被杀死时，fstream 的析构函数被调用，或者我会有一个损坏的文件或类似的东西？请记住，我将来会再次使用该文件。

Answer 1

嗯，你使用中断(Ctrl-C)，在一般情况下:

...an interrupt is a signal to the processor emitted by hardware or software indicating an event that needs immediate attention. An interrupt alerts the processor to a high-priority condition requiring the interruption of the current code the processor is executing. The processor responds by suspending its current activities, saving its state, and executing a function called an interrupt handler (or an interrupt service routine, ISR) to deal with the event...

你的输出流会发生什么是系统特定的，它取决于是否正在进行一些缓存。