Answer:
When we declare a function as a friend of a template class, it means it can access the public, as well as the private and protected members both data variables, and functions of that class. Thus, the friend has access not only to certain data types, but they have access to all the data types of that class. Thus, the function declared as the friend is never deprived of accessing any particular data type of a template class, or any class.
Explanation:
However, you should understand what is template class as well. A template class is the one that is a template and can be transformed into various object code for various data types, that supports all the operators used inside that class or function. We do have the template function. And these behave generically.
Answer:
operating system
Explanation:
System software are those programs that many refer to as computer programs. The most basic function of system software is to manage the computer systems. It acts as an interface between the computer’s hardware and the end user. System software converts instructions that end users give to the computer into a machine understandable language. Examples of system software include operating systems, utility programs, device drivers, and windows systems. The operating system is responsible for the functioning of all the computer’s hardware parts. It is the software loaded into the system when the computer boots up. It manages everything, from the memory, to the CPU, and many other different tasks.
Answer:
-1/12
Explanation:

look up the derivation by Srinivasa Ramanujan for a formal proof.
Just shut everything down.
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Presentation software allows users to present information and/or information. They can send the organized information to their chosen contacts.
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