Special symbols called tags are used in which of the following languages?
A) C# B) HTML/XHTML C) Java D) C++
B
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The Picture Box control’s ____________ property determines whether the image stored in the control will cause the control to be shrunk or expanded.
a. Display Mode b. Visible c. Size Mode d. Render
Provide the equivalent tuple relational calculus and domain relational calculus expressions for each of the relational algebra queries given in Exercise 4.8.
a) ?hotelNo (?price ? 50 (Room) ) b) ?Hotel.hotelNo ? Room.hotelNo(Hotel ? Room) c) ?hotelName (Hotel Hotel.hotelNo ? Room.hotelNo (?price ? 50 (Room)) ) d) Guest (?dateTo ? ‘1-Jan-2007’ (Booking)) e) Hotel Hotel.hotelNo ? Room.hotelNo (?price ? 50 (Room)) ) f) ?guestName, hotelNo (Booking Booking.guestNo ? Guest.guestNo Guest) ?
(Printing Trees) Write a recursive member function outputTree to display a binary tree ob- ject on the screen. The function should output the tree row by row, with the top of the tree at the left of the screen and the bottom of the tree toward the right of the screen. Each row is output verti- cally. For example, the binary tree illustrated in Fig. 20.24 is output as follows:
Note that the rightmost leaf node appears at the top of the output in the rightmost column and the root node appears at the left of the output. Each column of output starts five spaces to the right of the previous column. Function outputTree should receive an argument totalSpaces representing the number of spaces preceding the value to be output (this variable should start at zero, so the root node is output at the left of the screen). The function uses a modified inorder traversal to output the tree—it starts at the rightmost node in the tree and works back to the left. The algorithm is as
follows:
While the pointer to the current node is not null
Recursively call outputTree with the right subtree of the current node and
totalSpaces + 5
Use a for statement to count from 1 to totalSpaces and output spaces
Output the value in the current node
Set the pointer to the current node to point to the left subtree of the current node Increment totalSpaces by 5.
How do you activate the Lock Drawing Mode feature in PowerPoint 2010?
A) Right-click the shape you want and select Lock Drawing Mode. B) Right-click the Shapes button and select Lock Drawing Mode. C) Click the Lock Drawing Mode option below the Shape gallery. D) Click the Lock Drawing Mode button on the Insert tab.