Coding Quiz (3)

This block is a condition like the ones that you have seen in an If statement (selection). When will this condition be 'true'?

• This condition will be true when the sprite is in the x position that is higher than -22.

• This condition will not be true when the sprite is in the x position that is higher than -220.

• This condition will be true when the sprite is in the x position that is higher than -220.

• This condition will not be true when the sprite is in the x position that is higher than -22.

When will this condition be 'false'?

• This condition will be false when the y position is more than -220.

• This condition will be false when the y position is less than -220.

• This condition will be false when the x position is more than -220.

• This condition will be false when the x position is less than -220.

What specifically will happen when this block of code is executed?

• For as long as the x position is less than -220 the sprites’ y position will change by -10. This is making the sprite move left along the screen until it gets to the edge.

• For as long as the x position is less than -220 the sprites’ x position will change by -10. This is making the sprite move left along the screen until it gets to the edge.

All of the code underneath When green flag clicked is surrounded by a Forever block. What do you think the Forever block is being used for?

• The Forever block is repeating whatever is inside the loop, over and over again. It will keep doing this until the game is physically stopped by the user.

• The Forever block is repeating whatever is inside the loop, over and over again. It will keep doing this.

When will the Forever block stop running?

• It wont

• It will only stop running if the game is physically stopped by the user.

• Not sure

• Never

The Repeat until block repeats until the condition becomes 'true'. Why does the loop start again once the building has left the screen?

• Because it wants to!

• Because the whole loop is inside a Forever loop. This means that the Repeat until loop will run until the sprite gets to the left of the screen (at position -220) and then the loop will break. Because the loop is inside a Forever loop, it starts again.

Explain how a Forever loop works.

• A Forever loop only runs once.
• A Forever loop stops after a certain number of iterations.
• A Forever loop requires a specific condition to end.
• A Forever loop will continuously repeat the blocks of code within it until it is physically stopped by the user.

Explain how a Repeat until loop works.

• A Repeat until loop will repeat the blocks of code inside it until the condition is ‘true’.

• A Repeat until loop works by executing the code only once
• A Repeat until loop works by executing a block of code repeatedly until a specified condition is not met
• A Repeat until loop works by executing the code in a random order