#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <sstream>
 
int main()
{
   std::string myString = "This is \n a test. Let's go on. \n Yeah.";
   std::replace(myString.begin(), myString.end(), '\n', ';');
   std::stringstream ssMyString(myString);
   std::string each_split;
   std::vector<std::string> vec;
   while(std::getline(ssMyString, each_split, ';')) vec.emplace_back(each_split);
   for(const auto& it: vec) std::cout << it << "\n";
}

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