OCR J277 - Programming Advanced Revision

1 [4 Marks]

Calculate the result:

10 / 2
10 DIV 3 (or // )
10 MOD 4 (or % )
2 ^ 4 (or ** )

✅ Mark Scheme

/ : 5.0 (Float division)
DIV : 3 (Integer division)
MOD : 2 (Remainder of 10/4 is 2)
^ : 16 (2*2*2*2)

Score:

2 [3 Marks]

Given x = 5, y = 10. True or False?

x > 5 OR y == 10
x < 10 AND y != 10
NOT (x == 5)

✅ Mark Scheme

True (Second part is true)
False (Second part is false, y IS 10)
False (x IS 5, so True becomes False)

Score:

3 [3 Marks]

Difference between average = total / count and average = total DIV count?
Why does data type matter?

✅ Mark Scheme

/ keeps the decimal value (Float), while DIV removes it (Integer).

Score:

4 [3 Marks]

(a) Symbol for Assignment?
(b) Symbol for Comparison (Equal to)?
(c) Write code to check if score is 100.

✅ Mark Scheme

(a) =

(b) ==

(c) if score == 100:

Score:

5 [4 Marks]

age = int(input("Enter age: ")) if age > 13 OR age < 19: print("You are a teenager") else: print("You are not a teenager")

(a) Why is this wrong? Give an example.
(b) Correct the code.

✅ Mark Scheme

(a) OR means only one side needs to be true. 100 is > 13, so it prints "Teenager".

(b) if age >= 13 AND age <= 19:

Score:

6 [2 Marks]

price = 10 print("The price is " + price)

Explain the error using technical terms.

✅ Mark Scheme

Runtime Error / TypeError: You cannot concatenate a String with an Integer without casting.

Score:

7 [5 Marks]

a = 10 b = 2 c = 0 WHILE a > b a = a - 2 b = b + 1 c = c + b ENDWHILE print(c)

Trace the loop. What is the value of c printed?

Trace Table:

a	b	c	Output

✅ Mark Scheme

1. a=8, b=3, c=3

2. a=6, b=4, c=7

3. a=4, b=5, c=12

End loop (4 is not > 5)

Output: 12

Score:

8 [2 Marks]

Open gate IF: Alarm is OFF And (Keycard OR MasterCode).
Fill in the blanks:
if (NOT alarm) ______ (keyCard == True ______ masterCode == True)

✅ Mark Scheme

1. AND

2. OR

Score:

9 [4 Marks]

id = int(input("Enter ID")) if id == 1: print("Red") if id == 2: print("Red") if id == 3: print("Red") if id == 4: print("Blue") if id == 5: print("Blue") if id == 6: print("Blue")

Rewrite efficiently using range checks (>=, <=, AND/OR).
- 1-3: Red
- 4-6: Blue
- Else: Spectator

✅ Mark Scheme

if id >= 1 and id <= 3:
    print("Red")
elif id >= 4 and id <= 6:
    print("Blue")
else:
    print("Spectator")

Score:

10 [6 Marks]

Write a program:

Input whole number.
Output "Even" or "Odd".
If > 0 AND multiple of 10: "Big Ten".
If < 0: "Negative number" .

✅ Mark Scheme

num = int(input("Enter num: "))

if num % 2 == 0:
    print("Even")
else:
    print("Odd")

if num > 0 and num % 10 == 0:
    print("Big Ten")

if num < 0:
    print("Negative number")

Score:

11 [2 Marks]

Record Product has Stock field.
Write code to decrease item1's stock by 5.

✅ Mark Scheme

item1.Stock = item1.Stock - 5

Score:

Topic 2.2.2: Programming Advanced