Question 01: Write a Python program to accept two integers and print their sum.

Answer:
def main(int1: int, int2: int) -> int:
    print(f"{int1} + {int2} = {int1 + int2}")

if __name__ == '__main__':
    main(2, 2)


Output:
2 + 2 = 4


Question 02: Write a Python program that accepts the radius of a circle and prints its area.

Answer:
def main(radius: int):
    print(f"Area: {3.14 * radius * radius}")
    # or you can do 3.13 * radius ** 2

if __name__ == '__main__':
    main(7)


Output:
Area: 153.86


Question 03: Write a Python program to accept the length and width of a rectangle and compute its perimeter and area.

Answer:
def main(length: int, width: int) -> None:
    print("Perimeter:", 2 * (length + width))
    print("Area:", length * width)

if __name__ == '__main__':
    main(10, 10)


Output:
Perimeter: 40
Area: 100


Question 04: Write a Python program to compute simple interest for a given principal amount, time, and rate of interest.

Answer:
def main(principal: int, time: int, rate: float) -> None:
    print(f"Simple Interest: {principal * rate * time / 100}")

if __name__ == '__main__':
    main(10000, 10, 5.0)


Output:
Simple Interest: 5000.0


Question 05: Write a Python program to find whether a given number is even or odd.

Answer:
def main(num: int) -> None:
    print("Even" if num % 2 == 0 else "Odd")

if __name__ == '__main__':
    main(2)
    main(3)


Output:
Even
Odd


Question 06: Write a Python program to find the largest among three numbers.

Answer:
def main(numbers: list[int]) -> None:
    if not numbers:
        print("No numbers provided.")
        return
    
    largest = numbers[0]
    for num in numbers:
        if num > largest:
            largest = num
            
    print("Largest number:", largest)

if __name__ == '__main__':
    main([1, 2, 3])
    main([3, 1, 2])
    main([5, 10, 15, 20])


Output:
Largest number: 3
Largest number: 3
Largest number: 20


Question 07: Write a Python program to perform arithmetic calculation. The program should accept two operands and an operator, then display the result.

Answer:
def main(num1: float, num2: float, operator: str) -> None:
    if operator == '+':
        result = num1 + num2
    elif operator == '-':
        result = num1 - num2
    elif operator == '*':
        result = num1 * num2
    elif operator == '/':
        if num2 == 0:
            print("Error: Division by zero")
            raise ZeroDivisionError
        result = num1 / num2
    else:
        print("Error: Invalid operator")
        raise ValueError("Invalid operator. Use +, -, *, or /.")
    
    print(f"Result: {result}")

if __name__ == '__main__':
    main(10, 5, '+')
    main(10, 5, '-')
    main(10, 5, '*')
    main(10, 5, '/')


Output:
Result: 15
Result: 5
Result: 50
Result: 2.0


Question 08: Write a Python program to check whether a given year is a leap year or not.

Answer:
def main(year: int) -> None:
    if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0):
        print(f"{year} is a leap year.")
    else:
        print(f"{year} is not a leap year.")

if __name__ == '__main__':
    main(2020)
    main(2021)


Output:
2020 is a leap year.
2021 is not a leap year.


Question 09: Write a Python program to check if a number is positive, negative, or zero.

Answer:
def main(num: int) -> None:
    if num > 0:
        print(f"{num} is positive.")
    elif num < 0:
        print(f"{num} is negative.")
    else:
        print("The number is zero.")
    

if __name__ == '__main__':
    main(10)
    main(-5)
    main(0)


Output:
10 is positive.
-5 is negative.
The number is zero.


Question 10: Write a Python program to accept marks of a student and print the grade according to the given criteria:

Answer:
- Marks ≥ 90: A
- Marks ≥ 80: B
- Marks ≥ 70: C
- Marks ≥ 60: D
- Otherwise: Fail
"""

def main(marks: int) -> None:
    if marks >= 90:
        grade = 'A'
    elif marks >= 80:
        grade = 'B'
    elif marks >= 70:
        grade = 'C'
    elif marks >= 60:
        grade = 'D'
    else:
        grade = 'Fail'
    
    print(f"Grade: {grade}")

if __name__ == '__main__':
    main(95)
    main(85)
    main(75)
    main(65)
    main(55)

Output:
Grade: A
Grade: B
Grade: C
Grade: D
Grade: Fail


Question 11: Write a Python program to check whether a given character is a vowel or consonant.

Answer:
def main(char: str) -> None:
    vowels = 'aeiou'
    if char.lower() in vowels:
        print(f"{char} is a vowel.")
    elif char.isalpha():
        print(f"{char} is a consonant.")
    else:
        raise ValueError("Invalid input. Please enter an alphabetic character.")
        

if __name__ == '__main__':
    main('a')
    main('b')
    main('A')
    main('1') # also works with a int


Output:
Traceback (most recent call last):
  File "\\nas.local\share\data\school\Grade 11 CS\Practical File\question_11.py", line 17, in <module>
    main('1') # also works with a int
    ^^^^^^^^^
  File "\\nas.local\share\data\school\Grade 11 CS\Practical File\question_11.py", line 10, in main
    raise ValueError("Invalid input. Please enter an alphabetic character.")
ValueError: Invalid input. Please enter an alphabetic character.


Question 12: Write a Python program to check whether a number is divisible by both 5 and 11.

Answer:
def main(num: int) -> None:
    if num % 5 == 0 and num % 11 == 0:
        print(f"{num} is divisible by both 5 and 11.")
    else:
        print(f"{num} is not divisible by both 5 and 11.")

if __name__ == '__main__':
    main(55)
    main(22)
    main(10)
    main(121)


Output:
55 is divisible by both 5 and 11.
22 is not divisible by both 5 and 11.
10 is not divisible by both 5 and 11.
121 is not divisible by both 5 and 11.


Question 13: Write a Python program to find the absolute value of a number.

Answer:
def main(num: float) -> None:
    abs_value = abs(num)
    print(f"The absolute value of {num} is {abs_value}")

if __name__ == '__main__':
    main(-5.5)
    main(3.14)
    main(0)


Output:
The absolute value of -5.5 is 5.5
The absolute value of 3.14 is 3.14
The absolute value of 0 is 0


Question 14: Write a Python program to check if a character is an uppercase or lowercase letter.

Answer:
def main(char: str) -> None:
    if char.isupper():
        print(f"{char} is an uppercase letter.")
    elif char.islower():
        print(f"{char} is a lowercase letter.")
    else:
        raise ValueError("Invalid input. Please enter an alphabetic character.")

if __name__ == '__main__':
    main('A')
    main('a')
    main('B')
    main('b')
    main('1')  # also works with a int

Output:
Traceback (most recent call last):
  File "\\nas.local\share\data\school\Grade 11 CS\Practical File\question_14.py", line 16, in <module>
    main('1')  # also works with a int
    ^^^^^^^^^
  File "\\nas.local\share\data\school\Grade 11 CS\Practical File\question_14.py", line 9, in main
    raise ValueError("Invalid input. Please enter an alphabetic character.")
ValueError: Invalid input. Please enter an alphabetic character.


Question 15: Write a Python program to accept age and check whether the person is eligible to vote (18 or older).

Answer:
def main(age: int) -> None:
    if age >= 18:
        print(f"Age {age} is eligible to vote.")
    else:
        print(f"Age {age} is not eligible to vote.")

if __name__ == '__main__':
    main(18)
    main(17)
    main(20)


Output:
Age 18 is eligible to vote.
Age 17 is not eligible to vote.
Age 20 is eligible to vote.


Question 16: Write a Python program to accept three sides and check whether they form a valid triangle.

Answer:
def main(sides: tuple[int, int, int]) -> None:
    a, b, c = sides
    if a + b > c and a + c > b and b + c > a:
        print(f"The sides {sides} form a valid triangle.")
    else:
        print(f"The sides {sides} do not form a valid triangle.")

if __name__ == '__main__':
    main((3, 4, 5))
    main((1, 2, 3))
    main((5, 12, 13))
    main((7, 10, 5))
    main((1, 1, 2))


Output:
The sides (3, 4, 5) form a valid triangle.
The sides (1, 2, 3) do not form a valid triangle.
The sides (5, 12, 13) form a valid triangle.
The sides (7, 10, 5) form a valid triangle.
The sides (1, 1, 2) do not form a valid triangle.


Question 17: Write a Python program to accept cost price and selling price, then print whether there is profit, loss, or no gain.

Answer:
def main(cost_price: float, selling_price: float) -> None:
    if selling_price > cost_price:
        print(f"Profit: {selling_price - cost_price}")
    elif selling_price < cost_price:
        print(f"Loss: {cost_price - selling_price}")
    else:
        print("No gain, no loss.")

if __name__ == '__main__':
    main(100.0, 120.0)
    main(150.0, 130.0)
    main(200.0, 200.0)

Output:
Profit: 20.0
Loss: 20.0
No gain, no loss.


Question 18: Write a Python program to accept two numbers and check whether they are equal or not

Answer:
def main(num1: int, num2: int) -> None:
    if num1 == num2:
        print(f"{num1} and {num2} are equal.")
    else:
        print(f"{num1} and {num2} are not equal.")

if __name__ == '__main__':
    main(10, 10)
    main(10, 20)

Output:
10 and 10 are equal.
10 and 20 are not equal.