二级函数指针

#include<stdio.h>#include<stdlib.h>typedef int (*fp)(int,int);typedef int (**sfp)(int,int);int add (int a,int b){return a+b;}int main(){fp fp_m=&add;fp_m(1,2);(*fp_m)(1,2); //函数指针和函数名指向地址相同//sfp sfp_m= &fp_m;//此格式oksfp sfp_m = &(&add)//此格式error(*sfp_m)(1,2); printf("%d\n",1);return 0;}