#include <iostream>
#include <algorithm>
#include <iterator>
#include <regex>
 
int main() {
  std::string Text = "111:222:333";
  std::regex RegExp(":");
  std::vector<std::string> Vector = {}; 
  // заполняем вектор 
  std::copy(std::sregex_token_iterator(Text.begin(), Text.end(), RegExp, -1),
            std::sregex_token_iterator(),
            std::back_inserter(Vector)); 
  // печатаем вектор
  for(const auto &i:Vector) std::cout << i << "\n";
  return 0;
}

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