The Python code first asks the user to input an integer and stores it in the variable z. It then checks if z is less than 0. If it is, it prints a specific error message. Otherwise (if z is grea

The Python code first asks the user to input an integer and stores it in the variable z. It then checks if z is less than 0. If it is, it prints a specific error message. Otherwise (if z is greater than or equal to 0), it prints the number and its double.

If the number -6 is entered:
The input z becomes -6.
The condition z < 0 (i.e., $-6 < 0$) is true.
The program will execute the print statement inside the if block.
The output will be:
You must enter a number larger than 0.

If the number 5 is entered:
The input z becomes 5.
The condition z < 0 (i.e., $5 < 0$) is false.
The program moves to the elif condition z >= 0 (i.e., $5 \geq 0$), which is true.
The program will execute the print statement inside the elif block, calculating $z \times 2 = 5 \times 2 = 10$.
The output will be:
5 doubled is 10

The code first asks the user to enter a number.
Then, it checks if the entered number is less than 0. If it is, it tells the user to enter a larger number.
If the entered number is greater than or equal to 0, it calculates and displays the number doubled.

Here are the completed answers for the boxes:

3a) Write down what is displayed if the number -6 was entered when this program was run. [1]

3b) Write down what is displayed if the number 5 was entered when this program was run. [1]

3c) Explain what this code is doing. [3]
Asking the user to enter a number.
If the number is less than 0, ask user to enter a bigger number.
If the number is greater than or equal to 0, double the number and display the result.