get values from a vector of vectors c 2b 2b

1#include <iostream>
2#include <vector>
3using namespace std;  
4
5int main()
6{
7    vector<vector<int> > buff;
8
9    for(int i = 0; i < 10; i++)
10    {
11        vector<int> temp; // create an array, don't work directly on buff yet.
12        for(int j = 0; j < 10; j++)
13            temp.push_back(i); 
14 
15        buff.push_back(temp); // Store the array in the buffer
16    }
17
18    for(int i = 0; i < buff.size(); ++i)
19    {
20        for(int j = 0; j < buff[i].size(); ++j)
21            cout << buff[i][j];
22        cout << endl;
23    }
24
25    return 0;
26}

1// Initializing vector with values 
2    vector<int> vect1{1, 2, 3, 4}; 
3  
4    // Declaring another vector 
5    vector<int> vect2; 
6  
7    // Copying vector by assign function 
8    vect2.assign(vect1.begin(), vect1.end());