Checkpoint 17.11 Write a statement that defines an empty vector object named avect that can 17.12 Write a statement that defines a vector object named avect that can hold ints. 17.13 Write a statement that defines a vector object named avect that can hold ints. 17.14 Write a statement that defines a vector object named vi that can hold ints. The 17.15 What happens when you use an invalid index with the vector class's at() 17.16 What is the difference between the vector class's insert ()member function hold strings. The vector should have ten elements (initialized with the default value 0). The vector should have 100 elements, each initialized with the value 1. vector should be a copy of another vector name v2. member function? and push_back() member function