Name: Anonymous 2012-02-13 18:30
as complicated as possible and in a functional language of your choosing
#include <stdio.h>
#define S(T) typedef struct T { int x; } T
#define say(T) _Generic((T), \
struct H: 'H', \
struct e: 'e', \
struct l: 'l', \
struct o: 'o', \
struct W: 'w', \
struct r: 'r', \
struct d: 'd', \
struct co: ',', \
struct sp: ' ', \
struct ex: '!', \
struct nl: '\n')
int main(void) {
S(H);S(W);S(co);S(d);S(e);S(ex);S(l);S(nl);S(o);S(r);S(sp);
putchar(say((H){}));
putchar(say((e){}));
putchar(say((l){}));
putchar(say((l){}));
putchar(say((o){}));
putchar(say((co){}));
putchar(say((sp){}));
putchar(say((W){}));
putchar(say((o){}));
putchar(say((r){}));
putchar(say((l){}));
putchar(say((d){}));
putchar(say((ex){}));
putchar(say((nl){}));
}