Answer:
All should be added.
Explanation:
All of these are important to your cover letter to make it seem professional.
Hope this helped
Answer
calculator calc;
Explanation
An object is an instance of a class. And a class is what defines or describes the behavior or the state of the object of its type. When a class is defined no memory is allocated until when an object is created memory is allocated.
Solution:
It is done by Operating system.
An Operating system is system software that manages computer hardware and software resources and provides common services for computer programs.
Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources.
For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computer – from cellular phones and video game consoles to web servers and supercomputers.