Reading a Matrix txt file and storing as an array

Question

I\'m currently writing a Simulated Annealing code to solve a traveling salesman problem and have run into difficulties with storing and using my read data from a txt file. E

Answer 1

Does it even compile? I get ~7 errors. A sample:

strtok(cities, "\n");

strtok()'s first argument is a char * and not a std::string.

Does this help?

void LoadCities()
{
  std::vector f((std::istream_iterator
       (std::ifstream("city.txt"))), /* replace filename with your own */
    (std::istream_iterator()));
  if (!f.empty()) {
    std::cout << f.size() << "\n";
    /* print an arbitrary data point with 2 places of decimal */
    std::cout << std::setprecision(2) << f[ 0 ] << std::endl; 

  }
}

Working with matrices doesn't mean you need to have a multidimensional array. Especially, with 2D arrays. Of course it's easier to read and write ;)