gistfile1.c

/* Let's say you want to list all of the options to your program as an enum */

enum Option {
  OptionFoo,
  OptionBar,
  CountOfOption
}

/* You want to write a procedure to generate a help message for your program. Here's one way: */

for (int option = 0; i < CountOfOption; i++) {
  switch (option) {
    case OptionFoo:
      /* print foo usage */
      break;
    case OptionBar:
      /* print bar usage */
      break;
  }
}