读取用户输入，直到在C中按下ESC [英] Read user input until ESC is pressed in C

问题描述

在按下ESC键(或任何其他键)之前，是否有办法读取用户输入?我见过有关它的论坛，但它们都适用于C ++.我需要制作一个适用于C的软件.谢谢

Is there a way to read user input until the ESC key(or any other key) is pressed? I've seen forums about it but they've all been for C++. I need to make one that works for C. Thanks

推荐答案

让我们在ascii表中检查'esc'字符:

Let's check 'esc' character in ascii table:

$ man ascii | grep -i ESC
033   27    1B    ESC (escape)
$

因此，它的ascii值为:

Therefore, it's ascii value is:

• '033'-八进制值
• '27'-整数值
• '1B'-十六进制值
• 'ESC'-字符值

使用整数值"ESC"的示例程序:

A sample program using integer value of 'ESC':

#include <stdio.h>

int main (void)
{
    int c;

    while (1) {
        c = getchar();            // Get one character from the input
        if (c == 27) { break; }  // Exit the loop if we receive ESC
        putchar(c);               // Put the character to the output
    }

    return 0;
}

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