如何在C ++中将空格分隔的字符串拆分为多个字符串？ [英] How to split a space separated string into multiple strings in C++?

问题描述

有些我的代码如下：

static int myfunc(const string& stringInput)
{
    string word;
    stringstream ss;

    ss << stringInput;
    while(ss >> word)
    {
        ++counters[word];
    }
    ...
}

以获得一个输入字符串（由空格'）分隔成字符串变量 word ，但是这里的代码似乎有很多开销 - 将输入字符串转换为

The purpose here is to get an input string (separated by white space ' ') into the string variable word, but the code here seems to have a lot of overhead -- convert the input string to a string stream and read from the string stream into the target string.

是否有更优雅的方式来完成相同的目的？

Is there a more elegant way to accomplish the same purpose?

推荐答案

您正在问如何拆分字符串。 Boost有一个有用的实用程序boost :: split（）

You are asking how to split a string. Boost has a helpful utility boost::split()

http://www.boost.org/doc/libs/1_48_0/doc/html/string_algo/usage.html#id3115768

这里有一个例子，将结果的单词放入一个向量：

Here's an example that puts the resulting words into a vector:

#include <boost/algorithm/string.hpp>
std::vector<std::string> strs;
boost::split(strs, "string to split", boost::is_any_of("\t "));

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