多个字符的比较，我怎么能更聪明地编写它? [英] Multiple character comparisons, how can I write it smarter?

问题描述

我正在解析一个文本文件.解析时，我想跳过某些字符(空格，换行符，逗号，句点).在PHP中，可以使用 in_array(char，array)检查数组中变量的存在，但是鉴于我们正在使用指针，因此情况显然有所不同.

I am parsing a text-file. While parsing, I want to skip certain characters (space, line-break, comma, period). In PHP, one may check the existence of a variable in an array with in_array(char, array), but things are obviously different given we are working with pointers.

我目前正在这样写(请问奇怪的格式)

I am currently writing it like this (excuse the weird formatting)

if (c == ' '  || 
    c == '\n' || 
    c == '.'  || 
    c == ',') {

  continue;
}

但是感觉有点傻.有没有更聪明/更紧凑的方式来执行这样的多次比较?

But it feels a bit dumb. Is there a smarter/more compact way to perform multiple comparisons like this?

推荐答案

另一种选择是使用 strchr 检查给定字符是否在给定字符串中:

Another choice would be to use strchr to check if a given character is in a given string:

if (strchr(" \n.,", c)
    continue;

这篇关于多个字符的比较，我怎么能更聪明地编写它?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IT屋！