#include <stdio.h>
 
typedef unsigned int (*FUNCPTR) (void *);
typedef unsigned int   FUNC     (void *);
 
typedef struct _hoge {
    FUNCPTR     pf; // 出来る
    FUNC      * f1; // 出来る
//    FUNC        f2; // 出来ない
} hoge;
 
unsigned int func(void *d)
{
    printf("%s(); called\n", (char *)d);
    return 0;
}
 
int main()
{
    hoge h;
 
    h.pf = &func; h.pf("h.pf");
    h.f1 = &func; h.f1("h.f1");
//    h.f2 = &func; h.f2("h.f2");
 
    return 0;
}

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