how to remove an element from front in cector in cpp code example

Example 1: how to remove an element from a vector by value c++

std::vector<int> v; 
// fill it up somehow
v.erase(std::remove(v.begin(), v.end(), 99), v.end()); 
// really remove all elements with value 99

Example 2: c++ remove element from vector

vector.erase(position) // remove certain position
// or
vector.erase(left,right) // remove positions within range