how to remove value from the first in vector in c++ code example

Example 1: delete from front in vector c++

// Deleting first element
vector_name.erase(vector_name.begin());

// Deleting xth element from start
vector_name.erase(vector_name.begin()+(x-1));

// Deleting from the last
vector_name.pop_back();

Example 2: remove first element from vector c++

// Deletes the first element from vector v
v.erase(v.begin());