NMED 331 Lecture 10: Half Life and Mean Life

Which of the following has a valid relationship between the entity and attributes?

1.      The entity vehicle with an attribute fuel_require

2.      The entity patient with an attribute doctor

3.       The entity vehicle with an attribute driver

4.      The entity student with an attribute course

Describe the string class with respect to C++ with an example.

Define APIs with proper examples.