Student Activity

Student Activity Guide:

1) Conditional Statements (if, elif, else)

• Create a program that takes user input and determines if a number is positive, negative, or zero.

Example Code:

num = int(input("Enter a number: "))
if num > 0:
    print("Positive number")
elif num < 0:
    print("Negative number")
else:
    print("Zero")

2) Looping Constructs (for, while)

• Write a for loop that prints numbers from 1 to 10.

• Implement a while loop that asks for user input until they enter "exit".

Example Code:

# For loop example
for i in range(1, 11):
    print(i)

# While loop example
while True:
    user_input = input("Type 'exit' to stop: ")
    if user_input.lower() == "exit":
        break

3) Iterators and range Function

• Use range() to print even numbers from 2 to 20.

• Iterate over a list using an iterator.

Example Code:

# Using range() to print even numbers
for i in range(2, 21, 2):
    print(i)

# Using an iterator
numbers = [10, 20, 30, 40]
num_iterator = iter(numbers)
print(next(num_iterator))  # Output: 10
print(next(num_iterator))  # Output: 20

4) Nested Loops and Loop Control Statements (break, continue, pass)

• Use a nested loop to print a pattern.

• Demonstrate break, continue, and pass.

Example Code:

# Nested loop pattern
for i in range(1, 6):
    for j in range(i):
        print("*", end=" ")
    print()

# Break, continue, and pass examples
for num in range(1, 10):
    if num == 5:
        break  # Stops the loop at 5
    elif num == 3:
        continue  # Skips 3
    elif num == 7:
        pass  # Placeholder, does nothing
    print(num)

Student Exercises:

1. Write a program that asks for a number and prints whether it is even or odd.

2. Create a countdown timer using a while loop.

3. Implement a function that prints numbers from 1 to 50 but skips numbers divisible by 5 using continue.

4. Write a nested loop to generate a multiplication table from 1 to 10.