_{S3 Computing}If Statements Worksheet

The following table gives a condition to the pupil given by the class teacher. Complete the table showing whether the pupils get to leave the classroom based on the teacher’s conditions.

• 1

  Complete the following table

  A	B	A and B	A or B
  True	True	True	True
  True	False	False	True False True True
  False	True	True False True True	True
  False	False	True False True True	True False True True

  Test your answers by writing a program to do that.

• 2

  Complete the following table

  Variable 1	Variable 2	Condition	Result
  A = 10	B = 50	A < B	True False True True
  A = 50	B = 20	B < 50	True False True True
  C = 31	A = 31	C == A	True False True True
  A = 30	B = 25	A == B or B > 30	True False True True
  A = False	B = True	A and B	True False True True
  A = False	B = True	A or B	True False True True

  Test your answers by writing a program to do that.

• 1

  Write a multiple-choice quiz program that makes use of if statements. The quiz can be on any topic you like related to school, for instance you could do a quiz on physics or history. This program will ask the user to type a number 1, 2, 3 or 4 to give the answer and will look something like the following:

  The steps for the program are as follows:

  1. Set a total points variable to 0 (total_points = 0)
  2. Display the question (print("What is the capital of Germany?"))
  3. Display the options (print("1 = Paris, 2 = Berlin, 3 = Sofia, 4 = Madrid"))
  4. Ask the user for their answer and store it in a variable called user_answer (user_answer = input()). Note that the code solution here is not complete, something is missing!
  5. Now check that the number of the answer matches the number given by the user. (if user_answer == 2:).
  6. Finally, if they give the correct answer, give them one point. If they give the wrong answer, don’t give them a point. (total_points = total_points + 1)
  7. Now move onto the next question and repeat from step 2 onwards.
  8. When you have programmed all of the questions, display the number of points. (print(total_points))

  Add your code below:

• 2

  Write a Python program that takes a student's score as input and classifies it into a letter grade based on the following scale:

  • A : 70%+
  • B : 60%+
  • C : 50%+
  • D : 40%+

  Steps:

  1. Use an input statement to get the student's score.
  2. Use if statements to determine the letter grade.
  3. Print the corresponding letter grade.
• 3

  Write a Python program that functions as a simple calculator. The program should:

  1. Ask the user to input two numbers.
  2. Ask the user to choose an operation (addition, subtraction, multiplication, division).
  3. Perform the chosen operation and display the result.