In order for a C++ program to read data from a file,
A) the file must already exist.
B) the program must define a file stream object that can "point to" (i.e., reference) the file.
C) the program must open the file.
D) All of the above are required.
D) All of the above are required.
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When removing an element from a binary search tree that has two children, _______________________ will ensure that the resulting tree is still a binary search tree.
a) replacing it with its only child b) replacing it with its inorder successor c) simply deleting it d) all of the above e) neither a, b, nor c
What is wrong with the following VBScript code?
``` 1 If (s = t) Then 2 u = s + t 3 ElseIf (s > t) Then 4 u = r 5 Else 6 u = n 7 End If ``` a) Nothing b) Line 1 should read If ( s == t ) Then c) There should not be any parentheses in line 1 and 3 d) There is no such keyword as ElseIf
To uncompress a file compressed with the gzip utility, you use the ____ command.
A. gunzip B. unzip C. bunzip D. gunzip2
Which of the following describes the process of a wireless device switching from one AP to another?
A. roaming B. handoff C. routing D. redirecting