What is the benefit of using a call by reference when working with vectors or queue objects? In other words, why is it good to pass a reference of a queue or vector to a function instead of using a call by value?
What will be an ideal response?
When you pass a variable to a function in a call by value, the variable is copied in the called function. If you pass a vector or a queue to a function, you probably don’t want the vector copied (i.e., make a new, second vector). It is more efficient to pass by reference when using vectors or queues.
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A(n) ____________________ indicates a variable has no value assigned to it.
Fill in the blank(s) with the appropriate word(s).
Which of the following uses the unary logical operator?
A. If password != "sugarBear" Then Display "Sorry, incorrect password." End If B. If showsHotelClubCard Or showsTravelClubCard Then discount = 0.10 Else discount = 0.00 End If C. If personHasMoney And showedID Then ticketPrice = discountPrice End If D. If balance >= 200 Then Display "Your account will continue to earn interest." End If
It is permissible to download images from the Internet and re-use them as you see fit without regard to copyright or licensing requirements.
Answer the following statement true (T) or false (F)
Every table in a database must contain one field that is designated as the ID key field. __________________________
Answer the following statement true (T) or false (F)