Delete all items from a c++ std::vector

Question

I\'m trying to delete everything from a std::vector by using the following code

vector.erase( vector.begin(), vector.end() );

Answer 1

If your vector look like this std::vector vecType_pt you have to explicitly release memory ,Or if your vector look like : std::vector vecType_obj , constructor will be called by vector.Please execute example given below , and understand the difference :

  class MyClass
    {
    public:
        MyClass()
        {
            cout<<"MyClass"< vecType_ptr;
        typedef std::vector vecType_obj;
        vecType_ptr myVec_ptr;
        vecType_obj myVec_obj;
        MyClass obj;
        for(int i=0;i<5;i++)
        {
            MyClass *ptr=new MyClass();
            myVec_ptr.push_back(ptr);
            myVec_obj.push_back(obj);
        }
        cout<<"\n\n---------------------If pointer stored---------------------"<