Karel is starting a painting company! Karel’s first job is to fix all the paint on the fences in Karel’s neighborhood. All of the red paint should actually be blue, and all of the blue paint should actually be red. Write a program that has Karel move along the first street and change all the red squares to blue, and all the blue squares to red. The world will always be 10 avenues wide. Make sure your program works on each world! Note: Be sure to include comments for all functions that you use or create.
Answer options:
1. Write the program in Karel code.
2. Explain your program’s logic.
3. Create a flowchart of your solution.
4. Test the program on different worlds.
Let’s tackle the problem step by step by focusing on the first option: writing the program in Karel code. Here’s a simple program that Karel can use to switch the colors of paint on the fence from red to blue and from blue to red as it moves along the first street.
// This program changes red paint to blue and blue paint to red
// Function to change the color of the paint
function changeColor() {
if (frontIsClear()) { // Check if there is a clear path in front
if (beepersPresent()) { // Check if there is paint on the square
// If the color is red (represented as a '1')
if (currentColor() == RED) {
paintCorner(BLUE); // Change to blue
}
// If the color is blue (represented as a '2')
else if (currentColor() == BLUE) {
paintCorner(RED); // Change to red
}
}
move(); // Move Karel to the next square
changeColor(); // Recursive call to change the next color
}
}
// Main function to start the program
function main() {
changeColor(); // Start changing colors from the first square
}
// Start the program
main();
### Explanation of the Program’s Logic:
1. changeColor Function:
– It checks if Karel can move forward