在运行时保持对用户输入的响应，以重新启动选项

发布于 2025-02-07 03:21:12 字数 766 浏览 0 评论 0原文

我已经编程了一个小型提醒应用程序，该应用程序每隔几秒钟发出哔哔声：

#include <windows.h>
#include <stdio.h>

int main()
{
    int interval;
    printf("How often shall I remind you?\n");
    printf("Every x seconds: ");
    scanf("%d", &interval);

    if (interval < 0 || interval > 300)
    {
        printf("Invalid interval. Try 0 < interval < 300.");
        return 1;
    }

    int numofbeeps = 3600/interval;
    printf("Good. I will beep every %d seconds (that makes %d times) over the next 60 minutes.\n", interval, numofbeeps);

    for(int ctr=0 ; ctr < numofbeeps ; ctr++)
    {
        Sleep(interval*1000);
        Beep( 1000, 750 ); 
    }
    return 0;
}

是否有一种方法可以连续扫描用户输入（即使在 goto - 使用来重新启动提醒循环）？

原文

I have programmed a small reminder application which beeps every few seconds as specified by the user:

#include <windows.h>
#include <stdio.h>

int main()
{
    int interval;
    printf("How often shall I remind you?\n");
    printf("Every x seconds: ");
    scanf("%d", &interval);

    if (interval < 0 || interval > 300)
    {
        printf("Invalid interval. Try 0 < interval < 300.");
        return 1;
    }

    int numofbeeps = 3600/interval;
    printf("Good. I will beep every %d seconds (that makes %d times) over the next 60 minutes.\n", interval, numofbeeps);

    for(int ctr=0 ; ctr < numofbeeps ; ctr++)
    {
        Sleep(interval*1000);
        Beep( 1000, 750 ); 
    }
    return 0;
}

Is there a way to continuously scan for user input (even during sleep times) and, upon a certain input, take a certain action (e.g. restart the reminder loop by overwriting a variable and some goto-use)?

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Spring初心 2025-02-14 03:21:12

一个过程可以在其中一个等待功能中指定控制台输入缓冲区句柄，以确定何时有未读游戏机输入。当输入缓冲区不为空时，请发出控制台输入缓冲区手柄的状态。

DWORD wait = WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), interval*1000);
if (wait == WAIT_OBJECT_0)
  // read input
else if (wait == WAIT_TIMEOUT)
  // Beep?
else
  // Handle error

A process can specify a console input buffer handle in one of the wait functions to determine when there is unread console input. When the input buffer is not empty, the state of a console input buffer handle is signaled.

DWORD wait = WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), interval*1000);
if (wait == WAIT_OBJECT_0)
  // read input
else if (wait == WAIT_TIMEOUT)
  // Beep?
else
  // Handle error

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