C++ 函数将字符串拆分成单词 [英] C++ function split string into words

问题描述

我正在尝试用 C++ 编写一个函数，将我的字符串测试拆分为数组中的单独单词.我似乎无法循环正确的东西...有人有任何想法吗?它应该打印这个"

im trying to write a function in c++ that splits my string test into separate words in an array. i cant seem to the stuff in loop right... anyone got any ideas? it should print "this"

void app::split() {

    string test = "this is my testing string.";

    char* tempLine = new char[test.size() + 1];
    strcpy(tempLine, test.c_str());

    char* singleWord;

    for (int i = 0; i < sizeof(tempLine); i++) {

        if (tempLine[i] == ' ') {
            words[wordCount] = singleWord;
            delete[]singleWord;
        }

            else {
            singleWord[i] = tempLine[i];
            wordCount++;

            }

    }

    cout << words[0];
    delete[]tempLine;


}

推荐答案

如果你只想显示字符串中的单词，请使用:

If you just want to display words from string use:

#include <algorithm>
#include <iterator>
#include <sstream>
//..
   string test= "this is my testing string.";
        istringstream iss(test);
        copy(istream_iterator<string>(iss),
                 istream_iterator<string>(),
                 ostream_iterator<string>(cout, "\n"));

else 处理这些词使用 std::string

else to process those words uses std::vector of std::string

     std::vector<std::string> vec;

        istringstream iss(test);
        copy(istream_iterator<string>(iss),
                 istream_iterator<string>(),
                 back_inserter(vec));

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