Question

How do I write a while loop with a conditional statement designed to read through a vector of vectors?

Answer 1

#include <iostream>
#include <vector>

using namespace std;

int main() {
    vector<vector<int> > myvect{ { 1, 2, 3, 4, 5 }, 
                               { 6, 7}, 
                               { 8, 9, 10, 11, 12, 13 },
                               {14} }; 
  
        for(int i=0; i<myvect.size(); i++) {
                for(int j=0; j<myvect[i].size(); j++) {
                        cout << myvect[i][j] << " ";

                        // you can check the myvect[i][j]
                        // which is the number on ith row
                        // and jth column, we are reading and printing it.

                }
                cout << endl;
        }
}

I have shown the code, which you can use to traverse a vector of vector.. let me know if you have other issues related to this..