This study notes covers Practical Examples (GCSE Pseudocode & Python) within Selection (IF Statements) for GCSE Computer Science. Revise Selection (IF Statements) in 3.2 Programming for GCSE Computer Science with 15 exam-style questions and 8 flashcards. This topic shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 7 of 10 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Practical Examples (GCSE Pseudocode & Python)
Example 1: Grade Calculator
GCSE Pseudocode:
score = input("Enter score: ")
if score >= 70 then
grade = "A"
elseif score >= 60 then
grade = "B"
elseif score >= 50 then
grade = "C"
elseif score >= 40 then
grade = "D"
else
grade = "U"
endif
print("Grade: " + grade)
Python Equivalent:
score = int(input("Enter score: "))
if score >= 70:
grade = "A"
elif score >= 60:
grade = "B"
elif score >= 50:
grade = "C"
elif score >= 40:
grade = "D"
else:
grade = "U"
print("Grade:", grade)
Example 2: Login Validation
username = input("Username: ")
password = input("Password: ")
if username == "admin" AND password == "secret123" then
print("Access granted")
loggedIn = true
else
print("Access denied")
loggedIn = false
endifPractice questions for Selection (IF Statements)
Which programming construct is used to make a decision based on a condition?
Explain the difference between using ELSEIF and using nested IF statements to test multiple conditions.