#include <iostream>
#include <string>
using namespace std;

// count words in the standard input stream, cin

int main()
{
    const string LAST_WORD = "end";
    
    string word;
    int numWords = 0;                  // initially, no words

    cout << "type '" << LAST_WORD << "' to terminate input" << endl;
    
    cin >> word;
    while (word != LAST_WORD)          // read succeeded
    {   
        numWords++;
        cin >> word;
    }
    cout << "number of words read = " << numWords << endl;
   
    return 0;
}