c++ delete item in vector code example

Example 1: remove element by index from vector c++

// Deletes the second element (vec[1])
vec.erase(vec.begin() + 1);

// Deletes the second through third elements (vec[1], vec[2])
vec.erase(vec.begin() + 1, vec.begin() + 3);

Example 2: 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 3: c++ remove element from vector

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