GCSE Computer Science Paper 2: Application of Computational Thinking

# Convert a temperature from Celsius to Fahrenheit

celsius = 0.0
fahrenheit = 0.0

celsius = float(input("Enter a temperature in Celsius: "))
fahrenheit = celsius * 9 / 5 + 32
print("The temperature in Fahrenheit is", fahrenheit)
if celsius <= 0:
    print("Freezing")

# Grade the test marks of five students and count how many passed

passed = 0

for student in range(5):
    mark = int(input("Enter a mark out of 50: "))
    if (mark < 0) or (mark > 50):
        print("Invalid mark")
    elif (mark >= 40):
        print("Distinction")
        passed = passed + 1
    elif (mark >= 30):
        print("Merit")
        passed = passed + 1
    elif (mark >= 20):
        print("Pass")
        passed = passed + 1
    else:
        print("Fail")

print("Number passed:", passed)

# Weekly rainfall report

days = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
rainfall = []

for day in days:
    reading = float(input("Rainfall on " + day + " in mm: "))
    while reading < 0:
        print("Rainfall cannot be negative")
        reading = float(input("Rainfall on " + day + " in mm: "))
    rainfall.append(reading)

total = 0.0
highest = rainfall[0]
highestDay = days[0]
dryDays = 0
for index in range(len(rainfall)):
    total = total + rainfall[index]
    if rainfall[index] > highest:
        highest = rainfall[index]
        highestDay = days[index]
    if rainfall[index] == 0:
        dryDays = dryDays + 1
average = round(total / len(rainfall), 1)

print("Total:", total, "mm")
print("Average:", average, "mm")
print("Highest:", highest, "mm on", highestDay)
print("Dry days:", dryDays)
if total > 50:
    print("Wet week")
else:
    print("Dry week")

# Caesar cipher

choice = input("Encrypt or decrypt (E/D)? ").upper()
while choice != "E" and choice != "D":
    choice = input("Please enter E or D: ").upper()

message = input("Enter the message: ")

shift = int(input("Enter a shift from 1 to 25: "))
while shift < 1 or shift > 25:
    shift = int(input("The shift must be from 1 to 25: "))

if choice == "D":
    shift = -shift

result = ""
for character in message:
    if "A" <= character <= "Z":
        result = result + chr((ord(character) - ord("A") + shift) % 26 + ord("A"))
    elif "a" <= character <= "z":
        result = result + chr((ord(character) - ord("a") + shift) % 26 + ord("a"))
    else:
        result = result + character

print("Result:", result)

# Gym members report

count = 0
totalAge = 0
mostVisits = -1
mostName = ""
written = 0

reminders = open("reminders.txt", "w")
members = open("members.txt", "r")
for line in members:
    parts = line.strip().split(",")
    name = parts[0]
    age = int(parts[1])
    visits = int(parts[2])
    count = count + 1
    totalAge = totalAge + age
    if visits > mostVisits:
        mostVisits = visits
        mostName = name
    if visits < 5:
        reminders.write(name + "\n")
        written = written + 1
members.close()
reminders.close()

print("Members:", count)
print("Most visits:", mostName)
print("Average age:", round(totalAge / count, 1))
print("Reminders written:", written)

# Sports day results
# Each record holds a runner's name, house and time in seconds

results = [
    ["Ava", "Red", 14.2],
    ["Ben", "Blue", 13.8],
    ["Cal", "Green", 15.1],
    ["Dee", "Red", 13.5],
    ["Eli", "Blue", 14.9],
    ["Fay", "Green", 13.9]
]


def fastest(records):
    best = records[0]
    for record in records:
        if record[2] < best[2]:
            best = record
    return best[0]


def houseCount(records, house):
    count = 0
    for record in records:
        if record[1] == house:
            count = count + 1
    return count


def averageTime(records, house):
    if houseCount(records, house) == 0:
        return 0
    total = 0
    for record in records:
        if record[1] == house:
            total = total + record[2]
    return round(total / houseCount(records, house), 2)


def points(position):
    if position == 1:
        return 10
    elif position == 2:
        return 8
    elif position == 3:
        return 6
    elif position >= 4 and position <= 6:
        return 3
    else:
        return 0


print("Fastest runner:", fastest(results))
for house in ["Red", "Blue", "Green"]:
    print(house, "average time:", averageTime(results, house))