weirder.c

/*============================================================================
  ----------------------------------------------------------------------------
  weirder.c - ...and just when you think things couldn't get anymore fux0r3d.
                 (c) Damion 'Phr0z3n.Dev' Tapper, 2013.
                 Email: Phr0z3n.Dev@Gmail.com

  NOTE: void* - The 'pawn' of C Programming.
  ----------------------------------------------------------------------------
  ============================================================================*/
#define USE_SEC_API /* Comment this line if you do not have the secure libraries. */

#include <stdio.h>
#include <stdlib.h> /* For calloc. */

struct  tempS
{
    char    *myString;
}*tsp; /* This 'might' seem abnormal at first... */

void* retVal(void *, void *);
int main(void)
{
    tsp = calloc(1, sizeof(struct tempS));  /* ...but now you see why it is not. */

#ifdef USE_SEC_API
    printf_s("%d\n", retVal((void *)1, (void *)2)); /* The secure printf function (good programming practice). */
    printf_s("%llf\n", *(long double *)retVal((void *)2, NULL)); /* The 'weirder'ness starts here... */
    printf_s("%s\n", retVal((void *)3, NULL)); /* ...continues here... */
    printf_s(retVal(NULL, NULL));
#else
    /* If you are lacking the secure libraries. */
    printf("%d\n", retVal((void *)1, (void *)2));
    printf("%llf\n", *(long double *)retVal((void *)2, NULL));
    printf("%s\n", retVal((void *)3, NULL));
    printf(retVal(NULL, NULL));
#endif

    free(tsp); /* The actual prototype is free(void*) so I'm not the only weird guy around here. */

    return 0;
}

void* retVal(void *b, void *nada)
{
    switch((int)b)
    {
        case 1:
            return (int *)(2 * (int)nada);
        case 2:
            {   /* ... */
                long double *pi = calloc(1, sizeof(long double));

                *pi = (long double)22 / (long double)7;

                return pi;
            }
        case 3:
            return tsp->myString = "Hello World!";  /* ... */
        default:
            return "U R Phroz3n!"; /* ...it doesn't end here.  It lives forever in your mind. */
    }
}