Which is a good reason for passing a variable's address to a function?

1.	Which is a good reason for passing a variable's address to a function?
A.	the function will have a copy of the variable
B.	the function cannot change the value of the variable in the calling function
C.	C++ requires that all variables used in a function be passed by address
D.	the function needs to change multiple variable values
E.	the called function can change the value of the variable in the calling function
Answer» F.

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Which is a good reason for passing a variable's address to a function?

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