#include <stdio.h>

union foo
{
  int   i;
  char *s;
};


struct _param
{
  char      *name;
  int        type;
  union foo  params;
};


static struct _param argumente[] =
{
    { "name1", 1, { .i = 1 } },
    { "name2", 2, { .s = "Hallo" } },

    { NULL, 0, { .i = 0 } },
};

int main (int argc, char *argv[])
{
  int i = 0;

  while (argumente[i].name)
    {
      switch (argumente[i].type)
      {
        case 1:
          fprintf (stderr, "%s: Int (%d)\n",
                   argumente[i].name, argumente[i].params.i);
          break;
        case 2:
          fprintf (stderr, "%s: Int (%s)\n",
                   argumente[i].name, argumente[i].params.s);
          break;
        default:
          fprintf (stderr, "huh\n");
          break;
      }

      i++;
    }

  return 0;
}