#include <iostream>
    #include <vector>
    #include <string>

    /*Função para fazer split*/
    std::vector<std::string> split(std::string s, char c)
    {
        std::string buff{""};
        std::vector<std::string> v;

        for(auto n:s)
        {
            if(n != c) buff+=n;
            else if(n == c && buff != "") { v.push_back(buff); buff = ""; }
        }
        if(buff != "") v.push_back(buff);

        return v;
    }
    using namespace std;

    int main()
    {
        /*Quero passar os elementos(linhas) desse vector...*/
        std::vector<std::string> strOrigin;
        strOrigin.push_back("Uma frase legal aqui...");
        strOrigin.push_back("Uma frase mais legal ainda aqui");
        /*Para esse vector, de forma que eu possa acessar os elementos assim: strCurrent[i][j], onde i eram as linhas do meu vector antigo, e j são os elementos de cada linha*/
        std::vector<std::string> strCurrent;
        auto IteratorOrigin = strOrigin.begin();
        strCurrent.push_back(split(IteratorOrigin[0], ' '));

return 0;
}

exit status 1
main.cpp: In function 'int main()':
main.cpp:28:43: error: could not convert 'strOrigin' from 'std::vector<std::__cxx11::basic_string<char> >' to 'std::__cxx11::string {aka std::__cxx11::basic_string<char>}'
  strCurrent.push_back(split(strOrigin, ' '));