Info Tech

Info Tech Review

  1. Variables and Types

Problem: Define variables to store the length and width of a rectangle. Calculate and print its area and perimeter.


length = 10

width = 5

# Calculate area and perimeter

        area=length*width

        perimeter=2(length+width)

        print(area)

        print(perimeter)

  1. Using Input

Problem: Write a program to ask the user for the radius of a circle and calculate its area and circumference.

# Get radius from user (make sure to convert to floating point)
radius=float(input(“Radius:”)

# Calculate area and circumference

area=3.14*r**2

  1. Booleans, If Statements, and Comparison Operators

Problem: Determine whether a number is even or odd using an if statement.
python

# Get integer from user
num = int(input("Enter a number: "))

# Check if the number is even or odd

        If number%2:

                print(str(num)+”is an even number”)

        Else:

                print(str(num)+”is an odd number”)

  1. Logical Operators

Problem: Write a program to check if a given year is a leap year. A year is a leap year if:

  • It is divisible by 4 but not by 100, OR

  • It is divisible by 400.

#Get year from user
year = int(input("Enter a year: "))

# Determine if the year is a leap year and state so.

if year % 4 == 0:  

if year % 100 == 0:  # If also divisible by 100

         return year % 400 == 0  # Check if divisible by 400

else:

          return True  # If not divisible by 100, it's a leap year

 Else:

 return False

  1. Floating Point Numbers and Rounding

Problem: Calculate the tip amount for a restaurant bill. Ask the user for the bill total and the tip percentage. Round the result to 2 decimal places.

# Get bill total from user
bill = float(input("Enter the bill total: "))

tip_percentage = float(input("Enter the tip percentage (10-15%): "))

# Calculate and round tip

# Print the final bill total including the tip

  1. For Loops

Problem: Print the first 10 square numbers using a for loop.
# Write code below:

For i in range

  1. While Loops and Breaks

Problem: Write a program that keeps asking the user to guess a secret number until they guess it correctly. The secret number is 7. Hint: You may need to use a break statement if the user guess correctly

secret_number = 7

while True:

        # Write code below

  1. Functions and Return Values

Problem: Write a function to calculate the factorial of a number. Test the function with an example.

N! =N*(N-1)*(N-2)*...*2*1

Example 4! =4*3*2*1


def factorial(n):

    # Calculate factorial

print(factorial(5))  # Example usage

  1. Functions and Return Values

Problem: Write a function that converts an input in degrees celsius to fahrenheit


def cel_to_fahr(c):

    # Convert input c to fahrenheit. Write code below

  1. Functions and Return Values

Problem: Write a function that finds a given percentage of a number

Example 20% of 200 is  0.2*200= 40


def percent_of_number(percent,number):

    # Write code below

        #Make sure to convert percent to decimal first

  1. Functions and Return Values

Problem: Write a function that calculates the amount of an investment  with compound interest after t years.


def amount(p,r, n,t):

    # Write code below

        #Make sure to convert rate to decimal first

  1. Strings, Indexing, and Slicing

Problem: Ask the user for a word and print the first and last characters of the word. Also, print the word in reverse.


word = input("Enter a word: ")

# Extract and print characters

  1. Lists and List Methods

Problem: Create a list of integers. Add a number to the list, remove a number, and sort the list.
python
Copy code
numbers = [3, 1, 4, 1, 5]

# Perform operations

  1. For Loops and Lists

Problem: Write a program to calculate the average of a list of numbers.
python
numbers = [30, 50, 70, 90, 110]

# Calculate average

15. List Comprehension

Problem: Create a list called cubes of the first 10 cube numbers using list comprehension.

1^3= 1 2^3= 8 , 3^3= 27 etc

16. List Comprehension

Problem: Given the list below in miles, convert to km using list comprehension

distance_miles=[100, 250, 145, 170, 95, 62]

# Write code below, call the list distance_km

17. Dictionaries

Problem: Create a dictionary to store the names Alice, Bob and Charlie and their test scores.

Alice got a 92, Bob got a 78 and Charlie got 85  


# Call the dictionary students

# Get their scores and calculate the average

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