#include <iostream>#include <string>#include <vector>using namespace std;void show(vector<int> v){        for(auto v1 : v){                cout << v1 << endl;        }}void show2(vector<int> v){        for(vector<int>::const_iterator v1 = v.cbegin(); v1 != v.cend(); v1++){                cout << *v1 << endl;        }}int main(){        vector<int> int_vec;        for(int i = 0; i < 100; i++){                int_vec.push_back(i);        }        show2(int_vec);        //for(vector<int>::iterator t = int_vec.begin(); t != int_vec.end(); t++){        //      cout << *t << endl;        //}        /*循环vector*/        //for(auto v : int_vec){        //      cout << v << endl;        //}}