C/C++函数指针和函数指针数组用法

#include "iostream"
using namespace std;

void fun2(){
    cout<<"this is 2"<<endl;
}
void fun3(){
    cout<<"this is 3"<<endl;
}
void fun4(){
    cout<<"this is 4"<<endl;
}
int main()
{
   //方式一
   cout<<"void (*p)()"<<endl;
    void (*p)();
    p=fun2;
    (*p)();
    /

    //方式二
    cout<<"typedef void(*pfun)()"<<endl;
    typedef void(*pfun)();
    pfun A=fun3;
    pfun B=fun4;
    A();
    B();
    /
    //函数数组
    cout<<"typedef void (*pf1)()>>pf1 c[2]"<<endl;
    typedef void(*pf1)();
    pf1 C[2];
    C[0]=fun3;
    C[1]=fun4;
    C[0]();
    C[1]();
    //
    //函数指针数组
    cout<<"void (*pn[2])()"<<endl;
    void (*pn[2])();
    pn[0]=fun3;
    pn[1]=fun4;
    pn[0]();
    pn[1]();
    /
    //静态定义函数数组
    cout<<"void (*pn1[])()={fun3,fun4}"<<endl;
    void (*pn1[])()={fun3,fun4};
    pn1[0]();
    pn1[1]();
    ///
    return 1;
}