User Input in 2-D array of dynamic size in C++

  2d-vector, c++, stdvector, user-input, vector

I am trying to create a 2-D vector that as column 0 it would have integers and column 1 would have vectors.

For example:

column[0]  column[1]
2          {2}
5          {1,2,0}
12         {4,7,9,0,0,1,6,0,0}
3          {6}

column 0 would be user input while column 1 I will calculate it on my own – I don’t mind if it has dummy vectors for now and after the user exits then it would print the 2-D vector.
What I tried is:

int main() {
    unsigned int input;
    vector<vector<unsigned int>> v;
    while (cin >> input) // enter non int to exit
        for(int i=0; i<input;i++){
            vector<int> factorial; //calc in a separate function - dummy vector for now
            for (int j=0; j<factorial.size(); j++){
                v[i].push_back(input); //set column 0 as input
                v[i][j].push_back(factorial); //set column 1 as the vector containing the factorial of input
            }
        }
 return 0;
}

Source: Windows Questions C++

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