#include <iostream>
#include <string>

using namespace std;

int main() {
    string source {"this   is   a test this is only a test"};
    size_t foundPos;
    size_t startPos{0};
    string word;


    foundPos = source.find(' ');
    while (foundPos != string::npos) {
        word = source.substr(startPos, foundPos - startPos);
        if (word.size() > 0) {
            cout << "The word is \"" << word << "\"" << endl;
        }

        startPos = foundPos + 1;
        foundPos = source.find(' ', foundPos+1);
    } 
    word = source.substr(startPos);
    cout << "The word is \"" << word << "\"" << endl;

    return 0;
}