解析并将字符串添加到向量 [英] Parsing and adding string to vector

问题描述

我有以下字符串"0 1 2 3 4"(字符串末尾有一个空格).我想拆分并添加到字符串向量中.当我使用一个循环和一个字符串流时，该程序将其自身循环成最后一个数字为4的无限循环.它不想停止.

I have the following string "0 1 2 3 4 "(There is a space at the end of the string). Which i would like to split and add to a vector of string. When i use a loop and a stringstream, the program loops itself into a infinity loop with the last number 4. It does not want to stop.

如何拆分以下内容并同时添加到字符串向量中.

How can I split the following and add to a vector of strings at the same time.

请提前.

stringstream ss(currentLine);
for(int i=0;i<strlen(currentLine.c_str());i++){
      ss>>strCode;
      strLevel.push_back(strCode);
    }

推荐答案

std::ifstream infile(filename.c_str());
std::string line;

if (infile.is_open())
{
    std::cout << "Well done! File opened successfully." << std::endl;

    while (std::getline(infile, line))
    {
        std::istringstream iss(line);
        std::vector<std::string> tokens { std::istream_iterator<std::string>(iss), std::istream_iterator<std::string>() };

        for (auto const &token : tokens)
            if (!token.compare("your_value"))
                // Do something....
    }
}

首先，我们仅使用std::istringstream iss(line)读取一行，然后根据空格将单词拆分并将其存储在tokens向量中.

First of all, we read a line just by using std::istringstream iss(line), then we split words according to the whitespaces and store them inside the tokens vector.

更新:感谢Nawaz提出的改进建议(请参阅评论).

Update: thanks to Nawaz for improvement suggestions (see comments).

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