C++ delete vector, objects, free memory

I am totally confused with regards to deleting things in C++. If I declare an array of objects and if I use the clear() member function. Can I be sure that the memory was released?

For example :

tempObject obj1;
tempObject obj2;
vector<tempObject> tempVector;

tempVector.pushback(obj1);
tempVector.pushback(obj2);

Can I safely call clear to free up all the memory? Or do I need to iterate through to delete one by one?

tempVector.clear();

If this scenario is changed to a pointer of objects, will the answer be the same as above?

vector<tempObject> *tempVector;
//push objects....
tempVector->clear();