messing with vectors

stringshenanigans.cpp

#include <iostream>
#include <string>
#include <regex>
#include <vector>
#include <sstream>

using namespace std;

bool ci_compare (char a, char b) {return tolower(a)<tolower(b);}

void display(vector<string> words) {
  for (string word : words) cout << word << ' ';
  cout << endl;
}

int main() {
  // Get our sentence
  string sentence;
  cout << "Your sentence: ";
  getline(cin,sentence);

  // Split it by whitespace using regex.
  regex ws("\\s+");
  vector<string> words{
    std::sregex_token_iterator(sentence.begin(), sentence.end(), ws, -1), {}
  };

  // display words in default order
  display(words);

  // reverse the words
  reverse(words.begin(), words.end());
  display(words);

  // return words to normal
  reverse(words.begin(), words.end());

  // sort the letters in individual words
  for (string word : words){

    // Turn the word into a character vector
    vector<char> chars(word.begin(), word.end());

    // sort the character vector, case insensitively.
    sort(chars.begin(), chars.end(), ci_compare);

    // display the new character vector
    for (char letter : chars) cout << letter;
    cout << " ";
  }
  cout << endl;

}