#include <iostream>
using namespace std;
#include <string>
int main()
{
    string firstWord;
    cout << "Input the word: ";
    cin >> firstWord;
    char lastLetter(firstWord.at(firstWord.length() - 1));
 
    string currentWord;
    do {
        cout << "The last letter: " << lastLetter <<endl;
        cout << "Input the word beginning on '" << lastLetter << "': " <<endl;
        cin >> currentWord;
        lastLetter = currentWord.at(0) == lastLetter ? currentWord.at(currentWord.length() - 1) : lastLetter;
    } while (currentWord != "exit" || currentWord.at(0) == lastLetter);
    cin.get();
    cin.get();
    return 0;