随意瞎写点，作为博客重启吧

反正是自学，就慢慢来吧~~

#include<vector>#include<iostream>using namespace std;template<typename T>ostream& operator << (ostream& os,vector<T> const &a) {for(auto m:a){ os<<m<<' ';}os<<endl;return os;}int main(){vector<int> a;vector<string> b;a.push_back(1);a.push_back(2);a.push_back(3);a.push_back(4);a.push_back(5);b.push_back("hello");b.push_back("new");b.push_back("world");cout<<a<<b<<endl;return 0;}