Check out example codes for "how to append to a vector c++". It will help you in understanding the concepts better.
Code Example 1
vector<int> a; vector<int> b; // Appending the integers of b to the end of a a.insert(a.end(), b.begin(), b.end());
Code Example 2
//vector.push_back is the function. For example, if we want to add //3 to a vector, it is just vector.push_back(3) vector <int> vi; vi.push_back(1); // vi.push_back(2); //[1,2]
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