Answer:
system itself.
Explanation:
In Online Data Extraction data is extracted directly from the system itself.
The expression NOT (3+2=7) evaluates as TRUE because is is NOT the case that 3+2=7.
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Answer:
Header files serve two purposes. System header files declare the interfaces to parts of the operating system. You include them in your program to supply the definitions and declarations you need to invoke system calls and libraries.