CodeHS Karel Programming Questions and Answers with Certified Solutions

CodeHS Karel Programming Questions and Answers with Certified Solutions How does Karel know its exact location in the world? Based on its starting position in the grid What is the purpose of using turnLeft() multiple times in a row? To change Karel’s direction to face right or down How can Karel recognize patterns in the world? By checking conditions like beepersPresent() and frontIsClear() Why is it important to test Karel’s program with different worlds? To make sure the code works in all situations How can you make Karel take a step only if there is no obstacle ahead? Use an if statement with frontIsClear() 2 What should Karel do if a beeper is blocking its path? Pick it up before moving forward How does Karel keep track of the number of beepers it has? It doesn’t; Karel only knows if it has at least one or none What is the effect of defining a function but never calling it? Karel will never execute the function How can Karel be programmed to navigate around an obstacle? By checking for walls and turning accordingly What is the best way to make Karel repeat an action until it reaches a goal? Use a while loop How can Karel detect the edge of the world? By using frontIsClear() and checking if it becomes false 3 What does Karel do if given a command that makes no sense? Karel crashes with an error message How can Karel place a beeper only on alternate tiles? Use a loop and an if condition to skip every other step What is the best way to make Karel follow a zigzag pattern? By alternating movements and turns in a loop How can Karel know when to stop inside a loop? By checking conditions like frontIsClear() or beepersPresent() What happens if Karel moves without checking for a wall? Karel crashes if there is a wall ahead How can Karel be programmed to move in a square path? By repeating a pattern of moving forward and turning left 4 How does Karel understand the difference between one beeper and multiple beepers? It doesn’t; Karel only knows if beepers are present or not What is the best way to make Karel detect and pick up all beepers in a row? Use a while loop with beepersPresent() What should Karel do after completing a task? Stop moving or return to a specific location How can Karel place a beeper only when standing on a specific spot? Use an if statement with a custom condition