为什么不的getchar（）返回认作为EOF在控制台上？ [英] Why doesn't getchar() recognise return as EOF on the console?

问题描述

我有code下面的一个小片段，我使用的是运行 PellesC 。

I have a small snippet of code below that I'm running using PellesC.

在执行code和我输入了几个字符到控制台，我preSS进入。

When the code is executed and I've typed a few characters into the console, I press enter.

你能向我解释为什么的printf（％LD \\ N，NC）; 行似乎并没有得到执行？由于没有输出被写入控制台。

Can you explain to me why the printf("%ld\n", nc); line doesn't seem to get executed? As no output is written to the console.

#include <stdio.h>

int main(void)
{
    long nc = 0;

    while(getchar() != EOF)
    {
        ++nc;
    }

    printf("%ld\n", nc);
}

我已经决定要学完使用K＆放C;：R的书，我很不好意思地说这个，而基本的例子已经难倒我。

I've decided to learn C thoroughly using the K&R book and I'm embarrassed to say this rather elementary example has me stumped.

推荐答案

pressing进入实际上并没有导致EOF（文件结束）。你必须表明你与提供输入彻底完蛋了;在Unix上通常那样由pressing Ctrl + D键。在Windows上我相信这是按Ctrl + Z依次输入，但我真的不知道这一点。

Pressing enter doesn't actually cause an EOF ("end of file"). You have to signal that you are completely finished with providing input; on Unix you typically do that by pressing Ctrl+D. On Windows I believe it's Ctrl+Z followed by enter, but I'm really not sure about that.

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