Очереди, Кузичкин 141 группа

#include <iostream>
#include <queue>
#include <string>

using namespace std;

queue<string> stringDivide(string s)
{
  string str = "";
  queue<string> que;
  for (int i = 0; i < s.length(); ++i)
  {
    if (s[i] == " ") {
      que.push(str);
      str = "";
      continue;
    }
    str += s[i];
  }
  return que;
}

void printQueue(queue<string> que)
{
  for (string s : que) cout << s << " ";
}

int main()
{
  string base;
  getline(cin, base);
  queue<string> que = stringDivide(base);
  char ch = que.front()[0].toUpper();
  que.pop();
  queue<string> firstIsSame, firstIsNotSame;
  int cnt = 0;
  while (que.size() != 0)
  {
    if (que.front()[0].toUpper == ch)
    {
      cnt++;
      firstIsSame.push(que.front());
      que.pop();
    }
    else
    {
      firstIsNotSame.push(que.front());
      que.pop();
    }
  }
  printQueue(firstIsSame);
  printQueue(firstIsNotSame);
  cout << endl;
  return 0;
}