clear function in vector

// 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();

vectorname.clear()
Parameters :
No parameters are passed.
Result :
All the elements of the vector are
removed ( or destroyed )