how to delete element from vector in c++ at once code example

Example 1: vector erase specific element

vector.erase( vector.begin() + 3 ); // Deleting the fourth element

Example 2: vector erase specific element

template <typename T>
void remove(std::vector<T>& vec, size_t pos)
{
    std::vector<T>::iterator it = vec.begin();
    std::advance(it, pos);
    vec.erase(it);
}