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函式指標呼叫函式

#include<iostream> using namespace std;   void site1() {      cout<< "www.ok2002.com" <<endl; }   void site2() {      cout<< "www.ok1700.com" <<endl;
}   void site3() {      cout<< "www.ok1500.com" <<endl; }   void main() {      typedef void (*p)();      p v[]={site1,site2,site3};
     int size_v= sizeof (v)/ sizeof (v[0]);      cout<< "size_v=" <<size_v<<endl;      int i=0;      for (;i<size_v;++i)         
v[i](); }