gistfile1.c

#include <stdio.h>

typedef int (*callable)();


typedef struct 
{
	callable f;
} call_st;

int print()
{
	printf("nice boat!\n");
	return 0;
}

int main()
{	
	call_st cs = { print };
	(*((callable *)(void *)(&cs)))();
	return 0;
}