#include <stdio.h>
#include "twice.h"

#define PRINTF_STUFF
/* #undef PRINTF_STUFF*/

int main()
{
  int v, w, x, y, z;

  v = 7;
  w = TWICE(++v); // This is actually undefined
  v = 7;
  x = TWICE(v++); // This is actually undefined
  v = 7;
  y = twice(v++);
  v = 7;
  z = twice(++v);

  printf("w:%d x:%d y:%d z:%d\n", w, x, y, z);

#ifdef PRINTF_STUFF
  printf("w:%d x:%d y:%d z:%d\n", w, x, y);
  printf("w:%d x:%d y:%d z:%d\n", w, x, y, z, v);

  printf("Type an integer and press Enter: ");
  scanf("%d", &x);
  printf("Type another integer and press Enter: ");
  scanf("%d", &y);

  printf("%%d:%d\n%%f:%f%%\n%%c:%c\n%s%e\n",
         x, (double)x/y, y, "Scientific: ", (double)y/x);

  printf("\n");

  printf("%12d\n%-12d\n%12.2f\n%-1.3f\n", x, y, (double)x/y, (double)y/x);

#endif

  return 0;
}

int twice(int x)
{
  return x + x;
}