C++字符串分割字符串

#include <iostream>
#include <vector>

std::vector<std::string> split_str(std::string& str , const std::string& separator)
{
    size_t pos = 0;
    std::vector<std::string> result_str;
    while((pos = str.find(separator)) != std::string::npos)   //只要找得到separator
    {
        std::string token = str.substr(0,pos);
        result_str.push_back(token);
        str.erase(0, pos + separator.length());
    }
    if(str.size() != 0)
        result_str.push_back(str);
    return result_str;
}

int main() {
    std::string s = "asdf#@#sdghdf#@#hsdfags#@#ampk#@#123";
    std::string separator = "#@#";
    std::vector<std::string> result = split_str(s,separator);
    for(int i = 0; i < result.size(); ++i)
        std::cout << result[i] << std::endl;
    return 0;
}