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Question 18 D The following question uses a robot in a grid of squares. The robot is represented as a triangle, which

Question 18 D The following question uses a robot in a grid of squares. The robot is represented as a triangle, which

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Question 18 D The following question uses a robot in a grid of squares. The robot is represented as a triangle, which is initially facing toward the top of the grid. The following code segment moves the robot around the grid. Assume that n is a positive integer.

The following code segment moves the robot around the grid. Assume that n is a positive integer. Line 1: count +0 Line 2: REPEAT n TIMES Line 3: { Line 4: REPEAT 2 TIMES Line 5: Line 6: MOVE_FORWARD () Line 7: Line 8: ROTATE_RIGHT() Line 9: } Consider the goal of modifying the code segment to count the number of squares the robot visits before execution terminates. Which of the following modifications can be made to the code segment to correctly count the number of squares the robot moves to? A) Inserting the statement count + count + 1 between line 6 and line 7 B) Inserting the statement count + count + 2 between line 6 and line 7 C) Inserting the statement count + count + 1 between line 8 and line 9 D) Inserting the statement count + count + n between line 8 and line 9
Transcribed Image Text:The following code segment moves the robot around the grid. Assume that n is a positive integer. Line 1: count +0 Line 2: REPEAT n TIMES Line 3: { Line 4: REPEAT 2 TIMES Line 5: Line 6: MOVE_FORWARD () Line 7: Line 8: ROTATE_RIGHT() Line 9: } Consider the goal of modifying the code segment to count the number of squares the robot visits before execution terminates. Which of the following modifications can be made to the code segment to correctly count the number of squares the robot moves to? A) Inserting the statement count + count + 1 between line 6 and line 7 B) Inserting the statement count + count + 2 between line 6 and line 7 C) Inserting the statement count + count + 1 between line 8 and line 9 D) Inserting the statement count + count + n between line 8 and line 9
Question 18 D The following question uses a robot in a grid of squares. The robot is represented as a triangle, which is initially facing toward the top of the grid. The following code segment moves the robot around the grid. Assume that n is a positive integer.
Transcribed Image Text:Question 18 D The following question uses a robot in a grid of squares. The robot is represented as a triangle, which is initially facing toward the top of the grid. The following code segment moves the robot around the grid. Assume that n is a positive integer.
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