Question

Question: 6
Karel starts at Row 1 and Column 1, facing East. After calling the stairStep function twice, where will Karel be and what direction will Karel be facing? (assume this is a SuperKarel program and the world is 10x10 in size)

function stairStep() {
move();
turnLeft();
move();
turnRight();
}
JavaScript


Row 2, Column 2, Facing North


Row 3, Column 3, Facing East


Row 3, Column 3, Facing West


Row 4, Column 4, Facing East

Answer 1

Let's break down what happens when Karel calls the `stairStep` function twice.

1. **Initial Position**: Karel starts at Row 1, Column 1, facing East.

2. **First Call to `stairStep()`**:
- `move()`: Karel moves from Row 1, Column 1 to Row 1, Column 2. (Facing East)
- `turnLeft()`: Karel turns left, now facing North.
- `move()`: Karel moves from Row 1, Column 2 to Row 2, Column 2. (Facing North)
- `turnRight()`: Karel turns right, now facing East.

After the first call to `stairStep()`, Karel is at Row 2, Column 2, facing East.

3. **Second Call to `stairStep()`**:
- `move()`: Karel moves from Row 2, Column 2 to Row 2, Column 3. (Facing East)
- `turnLeft()`: Karel turns left, now facing North.
- `move()`: Karel moves from Row 2, Column 3 to Row 3, Column 3. (Facing North)
- `turnRight()`: Karel turns right, now facing East.

After the second call to `stairStep()`, Karel is at Row 3, Column 3, facing East.

So, after calling the `stairStep()` function twice, Karel will be at:

**Row 3, Column 3, Facing East**.