Exer05_14.cpp

#include <iostream>
#include <string>
using std::cout;
using std::cin;
using std::endl;
using std::string;
int main()
{
    // What if two words repeated the same times?
    // Consider this situation: in a challenge game, if you want to be a new
    // champion, you have to do even better than the last one. Just doing as
    // well as him/her is not enough. So the champion is always the first that
    // surmounts the others.
    string s, sLast, sMax;
    int cntNow = 0, cntMax = 0;
    while(cin >> s)
    {
        if(s == sLast)
            ++cntNow;
        else
            cntNow = 1;
        if(cntNow > cntMax)
        {
            sMax = s;
            cntMax = cntNow;
        }
        sLast = s;
    }
    if(!sMax.empty())
    {
        if(cntMax > 1)
            cout << sMax << " occurred " << cntMax << " times." << endl;
        else
            cout << "No duplicated words." << endl;
    }
    else
        cout << "Nothing is input!" << endl;
    return 0;
}