c++ vector 构建二维数组

#include <iostream>
#include <vector>using namespace std;int main ()
{//二维数组初始化vector<vector<int>> array2(5);for(int i=0;i < array2.size();++i){array2[i].resize(3);}//输出二维数组for(int i = 0 ;i < array2.size();++i ){for(int j=0;j<array2[0].size();++j){cout << array2[i][j] << " ";}cout << endl;}cout << endl;return 0;
}