How can I modify a vector in C++?

How can I modify a vector in C++?

You can modify a vector in C++ using various methods like push_back, pop_back, insert, and erase. What specific modification do you want to perform?

I want to add an element to the end of the vector.

You can use the push_back method. For example, if you have a vector named vec, you can do vec.push_back(newElement); to add newElement to the end.

What if I want to remove the last element?

You can use the pop_back method. Just call vec.pop_back(); and it will remove the last element from the vector.

Can I insert an element at a specific position?

Yes, you can use the insert method. For example, vec.insert(vec.begin() + index, newElement); will insert newElement at the specified index.