#include <iostream>

using namespace std;

int main () {
     string arg = "ffc";
     for (int i = 0; i < arg.length(); i++) {
         cout << "arg[" << i << "] = " << arg.at(i) << endl;
     }
      return 0;
}

//output:
//arg[0] = f
//arg[1] = f
//arg[2] = c