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CSC 101 Principles in Information Technology and Computation

Dr. Azhar

Section 4.13 Functions Multiple Choice Questions

Checkpoint 4.13.1.

Q-1: Select all the parts that are absolutely needed to create and call a function.
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  • function header (including the definition and the name)
  • Correct!
  • function body
  • Correct!
  • variables
  • Variables are not absolutely needed to create a function. For example, a function can just contain a print statement.
  • return statement
  • A return statement is not absolutely needed to create a function. For example, a print statement can be used instead of a return statement.
  • function call
  • Correct!
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Checkpoint 4.13.2.

Q-2: What will be returned after calling modulus(100,95) and modulus(95.3,100.5) and modulus(12,12)?
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def modulus(num1, num2):
  answer = num1 % num2
  return answer
  • 5 and 5.2 and 1
  • Incorrect! When you do a smaller number % a larger number, the answer will always be the smaller number. When you do a number % the same number, the answer will always be 0.
  • 5 and 95.3 and 0
  • Correct!
  • 100 and 95.3 and 12
  • Incorrect! When you do a larger number % a smaller number, the answer will be the remainder of the larger number divided by the smaller number. When you do a number % the same number, the answer will always be 0.
  • 95 and 100.5 and 0
  • Incorrect! When you do a larger number % a smaller number, the answer will be the remainder of the larger number divided by the smaller number. When you do a smaller number % a larger number, the answer will always be the smaller number.
  • 5 and 100.5 and 1
  • Incorrect! When you do a smaller number % a larger number, the answer will always be the smaller number. When you do a number % the same number, the answer will always be 0.
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Checkpoint 4.13.3.

Q-3: What will be printed after calling divide(100, 95) and divide(5, 7) and divide(7, 5)? (Note: Ignore whitespaces.)
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def divide(num1, num2):
  single_div_answer = num1 / num2
  print(round(single_div_answer, 2))
  double_div_answer = num1 // num2
  print(round(double_div_answer, 2))
  • 1, 1.05, 0, 0.71, 1, 1.4
  • Incorrect! Single division is floating point division. Double division is integer division, and it outputs the floor of the value.
  • 1.05, 5, 0.71, 5, 1.4, 2
  • Incorrect! Single division is floating point division. Double division is integer division, and it outputs the floor of the value.
  • 1.05, 2, 0.71, 1, 1.4, 2
  • Incorrect! Single division is floating point division. Double division is integer division, and it outputs the floor of the value.
  • 1.05, 1, 0.71, 1, 1.4, 1
  • Incorrect! Single division is floating point division. Double division is integer division, and it outputs the floor of the value.
  • 1.05, 1, 0.71, 0, 1.4, 1
  • Correct!
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Checkpoint 4.13.4.

Q-4: After running the following code, what will the output be?
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def multiplication_one(num1, num2):
  num1 * num2

print(multiplication_one(5, 10))

def multiplication_two(num1, num2):
  return num1 * num2

ultiplication_two(5, 10)
  • None will be outputted after printing and calling multiplication_one(5, 10). Nothing will be outputted after calling multiplication_two(5, 10).
  • Correct!
  • Nothing will be outputted after printing and calling multiplication_one(5, 10). None will be outputted after calling multiplication_two(5, 10).
  • Incorrect! None is printed when you print and call a function and there is no return statement in the function body. Nothing is outputted when you call a function that only has a return statement and you don’t print the function call.
  • 50 will be outputted after printing and calling multiplication_one(5, 10) and after calling multiplication_two(5, 10).
  • Incorrect! None is printed when you print and call a function and there is no return statement in the function body. Nothing is outputted when you call a function that only has a return statement and you don’t print the function call.
  • None will be outputted after printing and calling multiplication_one(5, 10). 50 will be outputted after calling multiplication_two(5, 10).
  • Incorrect! Nothing is outputted when you call a function that only has a return statement and you don’t print the function call.
  • 50 will be outputted after printing and calling multiplication_one(5, 10). Nothing will be outputted after calling multiplication_two(5, 10).
  • Incorrect! None is printed when you print and call a function and there is no return statement in the function body.
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Checkpoint 4.13.5.

Q-5: What would be outputted after running the code below? (Note: Ignore whitespaces.)
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def addition(num1, num2):
  return(num1 + num2)

def subtraction(num1, num2):
  print(num1 - num2)

def main():
  add_answer = addition(2, 4)
  new_add_answer = addition(add_answer, 105)
  print(subtraction(new_add_answer, 200))

main()
  • None and -89
  • Incorrect! When you print a function call (e.g., print(subtraction(new_add_answer, 200))) and the function prints an output (e.g., def subtraction(num1, num2): print(num1 - num2)), the output will be printed first due to the function call. Then, printing the function call will output None because the function does not have a return statement.
  • None
  • Incorrect! When you print a function call (e.g., print(subtraction(new_add_answer, 200))) and the function prints an output (e.g., def subtraction(num1, num2): print(num1 - num2)), the output will be printed first due to the function call. Then, printing the function call will output None because the function does not have a return statement.
  • -89
  • Incorrect! When you print a function call (e.g., print(subtraction(new_add_answer, 200))) and the function prints an output (e.g., def subtraction(num1, num2): print(num1 - num2)), the output will be printed first due to the function call. Then, printing the function call will output None because the function does not have a return statement.
  • -89 and None
  • Correct!
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