#include <iostream>
#include <string>

using namespace std;

int main() {
    string source {"Danger Danger Danger"};
    string pattern {"Dan"};
    //string pattern {"Fred"};

    size_t foundPos;

    foundPos = source.find(pattern);

    while (foundPos != string::npos) {
        cout << "found at " << foundPos << endl;
        foundPos = source.find(pattern, foundPos+1);
    }

    return 0;
}