We use the #ifndef, #define, and #endif

a. to prevent multiple definitions of a class
b. when we use separate files
c. whenever we use a class
d. none of the above
e. A and B

e. A and B

Computer Science & Information Technology

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Answer the following questions true (T) or false (F)

1. A friend class is made to further a sense of community among the students. 2. A tree is a recursive structure.

Computer Science & Information Technology

The ____ command gives you an active view of a running system and can display system summary information, such as CPU use, swap space use, and load averages.

A. vmstat B. du C. top D. df

Computer Science & Information Technology