按“Ctrl+C"时如何防止控制台应用程序终止在 C? [英] How to prevent Console Application from terminating when pressing "Ctrl+C" in C?

问题描述

我发现在 Windows 上从 GCC 编译的控制台应用程序总是在按下 Ctrl+C 时终止.

I found that Console Application compiled from GCC on Windows always terminate when pressing Ctrl+C.

在按下Ctrl+C时，是否有任何可行的方法可以防止控制台应用程序终止?

Is there any feasible way to prevent Console Application from terminating when pressing Ctrl+C?

推荐答案

当用户按下控件 C 时，一个信号 (SIGINT) 被发送到您的进程.当大多数信号发送到一个进程时，该进程必须要么处理该信号，要么操作系统将杀死它.所以...你需要做的就是为 SIGINT 安装一个信号处理程序.

When the user presses control C, a signal (SIGINT) is sent to your process. When most signals are sent to a process, that process must either handle the signal or the operating system will kill it. So... all you need to do is install a signal handler for SIGINT.

以下内容未经测试:

#include <signal.h>
static void ignore_control_c(int sig)
{
    /* re-arm the signal handler but otherwise ignore the signal */
    signal(sig, ignore_control_c);
}

int main(int argc, char *argv)
{
   signal(SIGINT, ignore_control_c);
   ...

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