本文介绍了简单的程序加入" D"输出的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有一个非常简单的程序,只是打印新行作为一个整数的数量,我每天号码后得到一个D。

样品输入:

D [进入]

E [进入]

F [进入]

按Ctrl-D [进入]

示例输出:

3D

我在做什么错了?

这是逐字从C程序设计语言第2版,页。 19:

 的#include<&stdio.h中GT;主要()
{
    INT C,NL;
    NL = 0;    而((C =的getchar())!= EOF)
        如果(C =='\\ n')
            ++ NL;
    的printf(%d个\\ N,NL);
}


解决方案

我觉得对D ^ D作为其标准的回波逻辑,通过之前对应的字符(或者更确切地说,这里缺乏到控制台输出来自Ctrl键D.焦炭,即EOF状态)来的getchar(),但是,这是理所当然,不发送CR / LF。 C程序然后将其3,等瞧...

通过退出和问题应该走开前打字超过9 CR试用程序,即不显示。

I have a very simple program that just prints the number of newlines as an integer and I get a "D" after every number.

Sample input:
d [enter]
e [enter]
f [enter]
Ctrl-D [enter]

Sample output:
3D

What am I doing wrong?

This is verbatim from The C Programming Language 2nd edition, pg. 19:

#include <stdio.h>

main()
{
    int c, nl;
    nl = 0;

    while ((c = getchar()) != EOF)
        if (c == '\n')
            ++nl;
    printf("%d\n", nl);
}
解决方案

I think the D comes from the Ctrl D. The console outputs ^D as its standard echo logic, prior to passing the corresponding char (or rather here lack of char, i.e. EOF status) to getchar(), however, and rightfully, not sending a cr/lf. The C program then sends its 3, et voila...

Try the program by typing more than 9 CR before exiting and the problem should "go away", i.e. not show.

这篇关于简单的程序加入&QUOT; D&QUOT;输出的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

08-11 07:58