Programming Exercises - 001: Input-Output, Variables, Expressions

Below are 20 exercise programs designed to help you practice basic Python concepts, such as variables, data types, operators, expressions, and basic input/output. Each exercise includes a question, hints, and the name of the file you should use to complete the task. These exercises do not use loops or functions, making them perfect for beginners.

1. Simple Greeting

Question: Write a Python script named simple_greeting.py that asks the user for their name and then prints a greeting message.

Hint: Use the input() function to get the user's name and the print() function to display the message.

2. Addition of Two Numbers

Question: Create a Python script named add_two_numbers.py that asks the user to enter two numbers and then prints their sum.

Hint: Use the input() function to read the numbers as strings and int() to convert them to integers before adding.

3. Calculate the Square of a Number

Question: Write a Python script named calculate_square.py that reads a number from the user and prints its square.

Hint: To find the square, multiply the number by itself.

4. Check for Even or Odd Number

Question: Create a Python script named even_or_odd.py that checks whether a given number is even or odd.

Hint: Use the modulus operator % to determine if the number is divisible by 2.

5. Convert Celsius to Fahrenheit

Question: Write a Python script named celsius_to_fahrenheit.py that converts a temperature given in Celsius to Fahrenheit.

Hint: Use the formula F = (C * 9/5) + 32 to convert Celsius to Fahrenheit.

6. Calculate the Area of a Rectangle

Question: Create a Python script named area_rectangle.py that calculates the area of a rectangle given its length and width.

Hint: The area of a rectangle is calculated using the formula Area = length * width.

7. Calculate Simple Interest

Question: Write a Python script named simple_interest.py that calculates simple interest using the formula SI = (P * R * T) / 100, where P is the principal amount, R is the rate of interest, and T is the time period.

Hint: Read the values of P, R, and T from the user.

8. Find the Largest of Three Numbers

Question: Create a Python script named largest_of_three.py that reads three numbers from the user and prints the largest one.

Hint: Use the if-elif-else statements to compare the three numbers.

9. Check if a Number is Positive, Negative, or Zero

Question: Write a Python script named check_number.py that reads a number from the user and checks whether it is positive, negative, or zero.

Hint: Use if, elif, and else to handle the different cases.

10. Calculate the Perimeter of a Rectangle

Question: Create a Python script named perimeter_rectangle.py that calculates the perimeter of a rectangle given its length and width.

Hint: The perimeter of a rectangle is calculated using the formula Perimeter = 2 * (length + width).

11. Convert Kilometers to Miles

Question: Write a Python script named km_to_miles.py that converts a distance given in kilometers to miles.

Hint: Use the conversion factor 1 kilometer = 0.621371 miles.

12. Swap Two Variables

Question: Create a Python script named swap_variables.py that swaps the values of two variables.

Hint: Use a temporary variable to hold one of the values during the swap.

13. Calculate the Area of a Circle

Question: Write a Python script named area_circle.py that calculates the area of a circle given its radius.

Hint: Use the formula Area = 3.14159 * radius * radius for the calculation.

14. Calculate the Average of Three Numbers

Question: Create a Python script named average_three_numbers.py that reads three numbers from the user and prints their average.

Hint: Calculate the average using the formula Average = (num1 + num2 + num3) / 3.

15. Check if a Year is a Leap Year

Question: Write a Python script named leap_year.py that checks if a given year is a leap year.

Hint: A year is a leap year if it is divisible by 4, but not by 100 unless it is also divisible by 400.

16. Convert Hours and Minutes to Minutes

Question: Create a Python script named time_to_minutes.py that converts a given time in hours and minutes to total minutes.

Hint: Multiply the hours by 60 and add the minutes to get the total minutes.

17. Reverse a String

Question: Write a Python script named reverse_string.py that reads a string from the user and prints it in reverse.

Hint: You can reverse a string using slicing like this: reversed_string = string[::-1].

18. Calculate the Volume of a Cube

Question: Create a Python script named volume_cube.py that calculates the volume of a cube given its side length.

Hint: Use the formula Volume = side ** 3 for the calculation.

19. Check if a Number is Divisible by Another

Question: Write a Python script named divisibility_check.py that checks if one number is divisible by another.

Hint: Use the modulus operator % to check divisibility.

20. Convert Days to Hours, Minutes, and Seconds

Question: Create a Python script named days_to_hms.py that converts a given number of days into hours, minutes, and seconds.

Hint: Use the conversion factors: 1 day = 24 hours, 1 hour = 60 minutes, and 1 minute = 60 seconds.