How to Split a String in C++?

  • 时间：2020-09-09 13:16:32
  • 分类：网络文摘
  • 阅读：122 次

In C++, there is no inbuilt split method for string. It is very useful to split a string into a vector of string. We can use the following string split method to split a string into a vector or string using the stringstream class.

1
2
3
4
5
6
7
8
9

vector<string> split(const string& text) {
    string tmp;
    vector<string> stk;
    stringstream ss(text);
    while(getline(ss,tmp,' ')) {
        stk.push_back(tmp);
    }
    return stk;
}
vector<string> split(const string& text) {
    string tmp;
    vector<string> stk;
    stringstream ss(text);
    while(getline(ss,tmp,' ')) {
        stk.push_back(tmp);
    }
    return stk;
}

Example usage:

1
2
3
4
5
6
7
8

int main() {
  string str = "This is me";
  vector<string> words = split(str);
  // words = ["This", "is", "me"];
  for (const auto &n: words) {
     cout << n << endl;
  }
}
int main() {
  string str = "This is me";
  vector<string> words = split(str);
  // words = ["This", "is", "me"];
  for (const auto &n: words) {
     cout << n << endl;
  }
}

And of course, you can easily add the support for custom delimiter such as split a string by comma or colon (IP addresses):

1
2
3
4
5
6
7
8
9

vector<string> split(const string& text, char delimiter) {
    string tmp;
    vector<string> stk;
    stringstream ss(text);
    while(getline(ss,tmp, delimiter)) {
        stk.push_back(tmp);
    }
    return stk;
}
vector<string> split(const string& text, char delimiter) {
    string tmp;
    vector<string> stk;
    stringstream ss(text);
    while(getline(ss,tmp, delimiter)) {
        stk.push_back(tmp);
    }
    return stk;
}

Let’s hope that a string split function will be added to the string class in future C++ releases!

–EOF (The Ultimate Computing & Technology Blog) —

推荐阅读：
红枣维生素含量高 喝大枣水养肝排毒　 黑木耳营养丰富对健康有五大好处　 香蕉和橘子能起到解毒护肝的作用　 吃葡萄、喝葡萄酒能帮助调节性功能　 绿茶、红茶、青茶、黑茶、白茶和黄茶　 奶茶多添加奶精 长期食用会引发心脏病　 奶茶调查：街头奶茶店调香味多用奶精　 适合秋天食用的养肺食谱可滋阴润肺　 哪些食物可以起到止咳润肺的作用　 食物的禁忌：中医如何区分食物的寒热性　
评论列表
添加评论