精彩百例：函数指针和typedef的应用

/*    filename:typedef    function:create a pointer to point a function and typedef a data type to point function*/# include <stdio.h>typedef struct{    int age;}people;void say_hello(){    printf("Hello world!\n");}typedef void(*Func)();//自定义一个数据类型，可以指向一个无返回值，无参数值的函数指针int main(void){    Func p = say_hello;//声明一个函数指针，指向函数say_hello    p();    return 0;}

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