GE8151 - PSPP - UNIT III

CONTROL FLOW, FUNCTIONS These flash cards help you to revise the important questions related with Control flow statements and Functions.

64 flashcards · Computer Science · by Kamala Viswanathan

1. What does the following code print to the console? if 2 == 2: print("ice cream is tasty!")

   ice cream is tasty!

2. What does the following code print to the console? if "cat" == "dog": print("prrrr") else: print("ruff")

   ruff

3. What does the following code print to the console? if 5 > 10: print("fan") elif 8 != 9: print("glass") else: print("cream")

   glass

4. What does the following code print to the console? name = "maria" if name == "melissa": print("usa") elif name == "mary": print("ireland") else: print("colombia")

   colombia

5. What does the following code print to the console? if 88 > 100: print("cardio")

   Nothing

6. What does the following code print to the console? hair_color = "blue" if 3 > 2: if hair_color == "black": print("You rock!") else: print("Boring")

   Boring

7. What does the following code print to the console? if True: print(101) else: print(202)

   101

8. What does the following code print to the console? if False: print("Nissan") elif True: print("Ford") elif True: print("BMW") else: print("Audi")

   Ford

9. What does the following code print to the console? if 1: print("1 is truthy!") else: print("???")

   1 is truthy!

10. What does the following code print to the console? if 0: print("huh?") else: print("0 is falsy!")

    0 is falsy!

11. In programming, what is iteration? The repetition of steps within a program The order in which instructions are carried out A decision point in a program Testing a program to make sure it works

    The repetition of steps within a program

12. Why is iteration important? It determines the order in which instructions are carried out It allows code to be simplified by removing duplicated steps It allows multiple paths through a program It ensures the code works correctly

    2.It allows code to be simplified by removing duplicated steps

13. Which two statements are used to implement iteration? IF and WHILE ELSE and WHILE FOR and WHILE IF and ELSE

    3.FOR and WHILE

14. The condition for a while loop to continue could include which of the following? While something equals something While something is greater than something While something is True All of these

    All of these

15. Which of the following symbols is used in Python to mean "Equal to"? = != == >=

    =

16. 5 4 3 2 1 4 3 2 1 0 5 4 3 2 1 4 3 2 1 0

    4 3 2 1 0

17. 54321

18. 5 4 3 2 1

20. Hello world!

21. Try again!

22. Hello world!

23. To repeat a fixed number of times use a while loop for loop if loop indentation

    for loop

24. To repeat until a particular condition is true use while loop for loop if loop indentation

    while loop

25. The character that must be at the end of the line for if, while, for etc. : . , ;

    :

26. To solve a problem that requires the user to enter 10 numbers would use what type of iteration? While loop For loop Variable Selection

    while loop

27. In a Python program, what would be the iteration variable (looping variable) in the FOR LOOP code? n num value i

    n

28. In a Python program, what would be the starting value in the FOR LOOP code? 100 10 5 20

    5

29. In a Python program, what would be the starting value in the FOR LOOP code? 25 4 1 0

    0

30. What would be the output of the following snippet? n=1 while True: print (n) n+=1 if n==5: break print("After Break")

    1 2 3 4 After Break

31. What would be the output of the following snippet? for str in "Python": if str == "t": break print(str) print("Exit from loop")

    P y Exit from loop

32. What would be the output of the following snippet? n=0 while n < 5: n+=1 if n==3: continue print (n) print("Loop Over")

    1 2 4 5 Loop Over

33. What would be the output of the following snippet? n=0 for n in range(5): n+=1 if n==3: continue print(n) print("Loop Over")

    1 2 4 5 Loop Over

34. Write the correct way writing empty function in python.

    def fun(): pass

35. Which of the following items are present in the function header? A. function name B. function name and parameter list C. parameter list D. return value

    B. function name and parameter list

36. Which of the following enclose the input parameters or arguments of a function? A. brackets B. parentheses C. curly braces D. quotation marks

    B. parentheses

37. Which of the following keywords marks the beginning of the function block? A. fun B. define C. def D. function

    C. def

38. What is the name given to that area of memory, where the system stores the parameters and local variables of a function call? A. a heap B. storage area C. a stack D. an array

    C. a stack

39. Which of the following function definition does not return any value? A. a function that prints integers from 1 to 100. B. a function that returns a random integer from 1 to 100. C. a function that checks whether the current second is an integer from 1 to 100. D. a function that converts an uppercase letter to lowercase.

    A. a function that prints integers from 1 to 100.

40. What is the output of the following code snippet? def func(message, num = 1): print(message * num) func('Welcome') func('Viewers', 3) A. Welcome Viewers B. Welcome ViewersViewersViewers C. Welcome Viewers,Viewers,Viewers D. Welcome

    B. Welcome ViewersViewersViewers

41. What is the output of the following code snippet? def myfunc(text, num): while num > 0: print(text) num = num - 1 myfunc('Hello', 4) A. HelloHelloHelloHelloHello B. HelloHelloHelloHello C. invalid call D. infinite loop

    D. infinite loop

42. Which of the following would you relate to a function call made with an argument passed as its parameter? A. function invocation B. pass by value C. pass by reference D. pass by name

    B. pass by value

43. What is the output of the following code snippet? def func(x = 1, y = 2): x = x + y y += 1 print(x, y) func(y = 2, x = 1) A. 1 3 B. 2 3 C. The program has a runtime error because x and y are not defined. D. 3 2 E. 3 3

    E. 3 3

44. What is the output of the following code snippet? num = 1 def func(): num = 3 print(num) func() print(num) A. 1 3 B. 3 1 C. The program has a runtime error because x is not defined. D. 1 1 E. 3 3

    B. 3 1

45. What is the output of the following code snippet? num = 1 def func(): num = num + 3 print(num) func() print(num) A. 1 4 B. 4 1 C. The program has a runtime error because the local variable ‘num’ referenced before assignment. D. 1 1 E. 4 4

    E. 4 4

46. What is the output of the following code snippet? def test(x = 1, y = 2): x = x + y y += 1 print(x, y) test() A. 1 3 B. 3 1 C. The program has a runtime error because x and y are not defined. D. 1 1 E. 3 3

    E. 3 3

47. Which of the following function headers is correct? A. def f(a = 1, b): B. def f(a = 1, b, c = 2): C. def f(a = 1, b = 1, c = 2): D. def f(a = 1, b = 1, c = 2, d):

    C. def f(a = 1, b = 1, c = 2):

48. What is the output of the following code snippet? exp = lambda x: x ** 3 print(exp(2)) A. 6 B. 222 C. 8 D. None of the above

    C. 8

49. What is the output of the following code snippet? myList = [lambda x: x ** 2, lambda x: x ** 3, lambda x: x ** 4] for f in myList: print(f(3)) A. 27 81 343 B. 6 9 12 C. 9 27 81 D. 8 27 64

    C. 9 27 81

50. What is the output of the following code snippet? def func(): text = 'Welcome' name = (lambda x:text + ' ' + x) return name msg = func() print(msg('All')) A. Welcome All B. All Welcome C. All D. Welcome

    A. Welcome All

51. Which of the following are the two main parts of every function in Python? The function signature and the function body The function heading and the function body The function signature and the function corpus The function head and the function tail

    The function signature and the function body

52. def square(num): num_squared = num ** 2 return num_squared Which of the following lines of codes is the function’s signature? def square(num): return num_square None of these num_squared = num ** 2

    def square(num):

53. Choose the correct function declaration of fun1() so that we can execute the following function call successfully fun1(25, 75, 55) fun1(10, 20) def fun1(**kwargs) No, it is not possible in Python def fun1(args*) def fun1(*data)

    def fun1(args*)

54. What is the output of the add() function call def add(a, b): return a+5, b+5 result = add(3, 2) print(result) 15 8 (8, 7) Syntax Error

    (8, 7)

55. Which library function helps to find the square root of a number?

    sqrt()

56. sqrt() function is present in which module?

    math

57. How will you use sqrt() function in programs?

    math.sqrt(number)

58. What do you mean by GCD?

    The greatest common divisor of two integers a and b is the largest integer that divides them both.

59. One of the efficient algorithm to find GCD is Euclidean Algorithm Number Theory

    Euclidean Algorithm

60. Write the Euclidean formula for finding GCD.

    gcd(a,b) = 'b', if 'b' divides 'a' otherwise find gcd(b,a%b)

61. Use the Euclidean algorithm to compute the greatest common divisor of 170 and 245.

    We use the Euclidean algorithm: 245 = 1(170) + 75 170 = 2(75) + 20 75 = 3(20) + 15 20 = 1(15) + 5 15 = 3(5) The gcd is the last nonzero remainder; gcd(245, 170) = 5.

62. The pow() function returns the value of x to the power of y (xy). True Flase

    True

63. The above picture depicts linear search. 1.True 2.False

    True

64. The above picture depicts binary search. 1.True 2.False

    True