1、C++指针数组灵活使用

#include 
#include
using namespace std;

int main()
{
    const int seq_cnt=6;
    vector<int> Fiboncci,Lucas,Pell,Triangular,Square,Pentagonal;
    Fiboncci={1,1,2,3,5,8,13,21};
    Lucas={1,3,4,7,11,18,29,47};
    Pell={1,2,5,12,29,70,169,408};
    Triangular={1,3,6,10,15,21,28,36};
    Square={1,4,916,25,36,49,64};
    Pentagonal={1,5,12,22,35,51,70,92};

    vector<int> *current_vec=0;
    vector<int> *seq_addrs[seq_cnt]={&Fiboncci,&Lucas,&Pell,&Triangular,&Square,&Pentagonal};
    //seq_addrs为一个指针数组，大小为seq_cnt 每个指针都指向vector对象
    //seq_addrs为一个array 元素类型为vector *
    //seq_addrs[0]所持有的值是Fiboncci vector的地址
    for (int i=0;i<seq_cnt;++i) {
        current_vec=seq_addrs[i];
        vector<int> vec=*current_vec;
        for (int j=0;j<current_vec->size();j++) {
            //cout<<(*current_vec);
            cout<<(*current_vec)[j]<<"::";//读取每一个vector的元素
        }
        cout<<endl;
    }
    cout << "Hello World!" << endl;
    return 0;
}