8.10. Check Yourself

#include <CTurtle.hpp> namespace ct = cturtle; int main() { ct::TurtleScreen scr; ct::Turtle turtle(scr); turtle.begin_fill(); for(int i = 0; i < 4; i++){ turtle.forward(50); turtle.right(90); } turtle.end_fill(); scr.bye(); return 0; }

Q-2: How large would the undo queue be for the above code example?

• 13
• No, think about how many times fill is used...
• 10
• Correct!
• 8
• Incorrect! Consider that almost everything a turtle does is an action, even filling.
• 4
• Incorrect! Consider that there are some actions in a for loop.

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#include <CTurtle.hpp>
namespace ct = cturtle;

int main() {
    ct::TurtleScreen scr;
    ct::Turtle turtle(scr);

    for(int i = 0; i < 5; i++){
        turtle.forward(50);
        turtle.right(144);
    }

    scr.bye();
    return 0;
}

Q-3: What kind of shape does the above activecode create?

• Circle
• Incorrect! Consider how many times the for-loop iterates...
• No shape
• Incorrect! The turtle's pen is always down.
• Pentagon
• Incorrect! Consider the angle the turtle turns every iteration.
• Star
• Correct!

Q-4: You can have more than one turtle on one screen.

• True
• Correct!
• False
• Incorrect!

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