#include <iostream>

void dumpletters (const unsigned int length, char *letters, unsigned int numletters) {
  char *output = new char[length];
  output[length] = 0;
  unsigned int *i = new unsigned int[length];
  unsigned int level = 0;
  for(unsigned j=0; j<length; ++j) {
    i[j] = 0;
  }

  while(i[level] < numletters) {
    if(i[level] >= numletters) {
      --level;
      i[level] = 0;
    } else {
      output[level]=letters[ i[level] ];

      if(level-1 >= length) {
        //I will make sure I got the headers for this when the rest compiles
        std::cout << output << std::endl;
      }

      ++level;
      ++i[level];
    }
  }
  delete[] output;
  delete[] i;
}

int main(int argc, char *argv[])
{
  char letters[]={'a','b','c'};
  dumpletters(2,letters,3);
  std::cin.ignore();
  std::cin.getline();
  return 0;
}