函数指针模板

#include <stdio.h>void f(int i){    printf("in f(),%d\n",i);}void g(int i){    printf("in g(),%d\n",i);}void h(int i){    printf("in h(),%d\n",i);}void k(int i){    printf("in k(),%d\n",i);} int main(void) {    int i=0;    void (*fa[])(int)= {f,g,h,k};    scanf("%d",&i);    if( i>=0&& i<= sizeof(fa)/sizeof(fa[0]) ){        (*fa[i])(0);     }    return 0; }