What is the expected output of the following code?
Correct Answer: C
Explanation The code snippet that you have sent is a conditional statement that checks if a variable "counter" is less than 0, greater than or equal to 42, or neither. The code is as follows: if counter < 0: print("") elif counter >= 42: print("") else: print("") The code starts with checking if the value of "counter" is less than 0. If yes, it prints a single asterisk () to the screen and exits the statement. If no, it checks if the value of "counter" is greater than or equal to 42. If yes, it prints three asterisks () to the screen and exits the statement. If no, it prints two asterisks () to the screen and exits the statement. The expected output of the code depends on the value of "counter". If the value of "counter" is 10, as shown in the image, the code will print two asterisks (**) to the screen, because 10 is neither less than 0 nor greater than or equal to 42. Therefore, the correct answer is C. * *
Question 7
What happens when the user runs the following code?
Correct Answer: D
The code snippet that you have sent is a while loop with an if statement and a print statement inside it. The code is as follows: while True: if counter < 0: print("") else: print("**") The code starts with entering a while loop that repeats indefinitely, because the condition "True" is always true. Inside the loop, the code checks if the value of "counter" is less than 0. If yes, it prints a single asterisk () to the screen. If no, it prints three asterisks (**) to the screen. However, the code does not change the value of "counter" inside the loop, so the same condition is checked over and over again. The loop never ends, and the code enters an infinite loop. The program outputs either one asterisk () or three asterisks (**) to the screen repeatedly, depending on the initial value of "counter". Therefore, the correct answer is D. The program enters an infinite loop. Reference: [Python Institute - Entry-Level Python Programmer Certification]
Question 8
What is the expected output of the following code?
Correct Answer: C
The code snippet that you have sent is checking if two numbers are equal and printing the result. The code is as follows: num1 = 1 num2 = 2 if num1 == num2: print(4) else: print(1) The code starts with assigning the values 1 and 2 to the variables "num1" and "num2" respectively. Then, it enters an if statement that compares the values of "num1" and "num2" using the equality operator (==). If the values are equal, the code prints 4 to the screen. If the values are not equal, the code prints 1 to the screen. The expected output of the code is 1, because the values of "num1" and "num2" are not equal. Therefore, the correct answer is C. 1. Reference: [Python Institute - Entry-Level Python Programmer Certification]
Question 9
Drag and drop the conditional expressions to obtain a code which outputs * to the screen. (Note: some code boxes will not be used.)
Correct Answer:
Explanation One possible way to drag and drop the conditional expressions to obtain a code which outputs * to the screen is: if pool > 0: print("*") elif pool < 0: print("**") else: print("***") This code uses the if, elif, and else keywords to create a conditional statement that checks the value of the variable pool. Depending on whether the value is greater than, less than, or equal to zero, the code will print a different pattern of asterisks to the screen. The print function is used to display the output. The code is indented to show the blocks of code that belong to each condition. The code will output * if the value of pool is positive, ** if the value of pool is negative, and *** if the value of pool is zero. You can find more information about the conditional statements and the print function in Python in the following references: [Python If ... Else] [Python Print Function] [Python Basic Syntax]
Question 10
What happens when the user runs the following code?
Correct Answer: B
Explanation The code snippet that you have sent is calculating the value of a variable "total" based on the values in the range of 0 to 3. The code is as follows: total = 0 for i in range(0, 3): if i % 2 == 0: total = total + 1 else: total = total + 2 print(total) The code starts with assigning the value 0 to the variable "total". Then, it enters a for loop that iterates over the values 0, 1, and 2 (the range function excludes the upper bound). Inside the loop, the code checks if the current value of "i" is even or odd using the modulo operator (%). If "i" is even, the code adds 1 to the value of "total". If "i" is odd, the code adds 2 to the value of "total". The loop ends when "i" reaches 3, and the code prints the final value of "total" to the screen. The code outputs 2 to the screen, because the value of "total" changes as follows: When i = 0, total = 0 + 1 = 1 When i = 1, total = 1 + 2 = 3 When i = 2, total = 3 + 1 = 4 When i = 3, the loop ends and total = 4 is printed Therefore, the correct answer is B. The code outputs 2.
