Which of the following is an example of sequential-driven code?(1 point)

Question

Which of the following is an example of sequential-driven code?(1 point)
Responses

wn.onclick(f)
wn.listen()
wn.mainloop()
wn.onclick(f) wn.listen() wn.mainloop()

Wn.onkey(picture, "p")
wn.listen()
wn.mainloop()
Wn.onkey(picture, "p") wn.listen() wn.mainloop()

for i in range(x):
  for j in range(y):
    t.forward(z)
    t.right(360 / y)
  t.right(360 / x)
wn.listen()
wn.mainloop()
for i in range(x):   for j in range(y): t.forward(z) t.right(360 / y) t.right(360 / x) wn.listen() wn.mainloop()

def h1():
    t.forward(30)
def h2():
    t.left(45)
def h3():
    t.right(45)
wn.onkey(h1, "Up")
wn.onkey(h2, "Left")
wn.onkey(h3, "Right")

GPT-4o mini · Answer

Sequential-driven code is characterized by executing instructions in a specific order, step by step, without relying on events or conditions. Let's analyze the provided options:

wn.onclick(f) wn.listen() wn.mainloop() wn.onclick(f) wn.listen() wn.mainloop()

These lines are managing an event-driven program (click events) and not purely sequential.
Wn.onkey(picture, "p") wn.listen() wn.mainloop() Wn.onkey(picture, "p") wn.listen() wn.mainloop()

Similar to the first option, these lines are also about setting up event handling (key press events) and not sequential processing.
for i in range(x): for j in range(y): t.forward(z) t.right(360 / y) t.right(360 / x) wn.listen() wn.mainloop() for i in range(x): for j in range(y): t.forward(z) t.right(360 / y) t.right(360 / x) wn.listen() wn.mainloop()

This example uses loops to execute commands in a sequential manner and completes its tasks before going to the next operation. While it includes wn.listen() and wn.mainloop(), the primary execution is still sequential.
def h1(): t.forward(30) def h2(): t.left(45) def h3(): t.right(45) wn.onkey(h1, "Up") wn.onkey(h2, "Left") wn.onkey(h3, "Right")

This code sets up functions but is primarily focused on event-driven programming. There is no sequential execution happening here as the functions will be called based on keypresses.

Based on the above analysis, the code that exemplifies sequential-driven code is:

for i in range(x):
for j in range(y): t.forward(z) t.right(360 / y) t.right(360 / x) wn.listen() wn.mainloop()

This is because it represents a linear, step-by-step process that relies on loops for iteration.

death · Answer

Which of the following is an example of event-driven code?(1 point)
Responses

import turtle
t = turtle.Turtle()
wn = turtle.Screen()
import turtle t = turtle.Turtle() wn = turtle.Screen()

def h1():
t.forward(30)
wn.onkey(h1, "Up")
def h1(): t.forward(30) wn.onkey(h1, "Up")

for i in range(x):
for j in range(y):
t.forward(z)
t.right(360 / y)
t.right(360 / x)
for i in range(x): for j in range(y): t.forward(z) t.right(360 / y) t.right(360 / x)

t = turtle.Turtle()
wn = turtle.Screen()
wn.setColor("red")
t.pd()
t.speed(0)

GPT-4o mini · Answer

Event-driven code is characterized by responding to events (such as user inputs, clicks, or key presses) rather than executing in a strict sequential order. Let's analyze each of the provided options to identify the one that demonstrates event-driven programming:

import turtle
t = turtle.Turtle()
wn = turtle.Screen()
import turtle t = turtle.Turtle() wn = turtle.Screen()

This code simply initializes a turtle graphic and does not contain any event handling—it sets up the environment but does not react to events.
def h1():
t.forward(30)
wn.onkey(h1, "Up")
def h1(): t.forward(30) wn.onkey(h1, "Up")

This code defines a function h1 that moves the turtle forward when the "Up" key is pressed. The use of wn.onkey(h1, "Up") registers this function as an event handler for the key press, making this an example of event-driven code.
for i in range(x):
for j in range(y):
t.forward(z)
t.right(360 / y)
t.right(360 / x)
for i in range(x): for j in range(y): t.forward(z) t.right(360 / y) t.right(360 / x)

This code performs a series of operations in a loop. It does not wait for or respond to any user events; thus, it is not event-driven.
t = turtle.Turtle()
wn = turtle.Screen()
wn.setColor("red")
t.pd()
t.speed(0)

This code initializes the turtle and sets its properties, but it doesn't incorporate any event handling, so it is not event-driven.

Based on the analysis, the following option is the correct example of event-driven code:

def h1():
t.forward(30)
wn.onkey(h1, "Up")

This option demonstrates how an event (pressing the "Up" key) is used to trigger a function, making it event-driven.

death · Answer

A group of students is writing a program that will convert their letter grades into a 4.0 scale. For their program, they want a letter grade to be entered to be converted into the program. Which programming construct should be used to accomplish the selection and conversion?(1 point)
Responses

if-then-else
if-then-else

condition
condition

while loop
while loop

for loop

GPT-4o mini · Answer

To convert a letter grade into a 4.0 scale, the program needs to check the specific letter grade that a user inputs and then provide the corresponding numerical value. This task involves making decisions based on the input, which requires checking conditions.

The most appropriate programming construct for this scenario is if-then-else. This construct allows the program to evaluate different conditions (e.g., if the grade is "A", "B", "C", etc.) and execute the corresponding code to convert that letter grade into a numerical value.

Here's a brief explanation of the other options:

Condition: This is not a specific programming construct; it refers to the criteria used in control statements like if-then-else.
While loop: This construct is used for repeating a block of code while a condition is true, which is not the primary requirement in this case as we need to perform a one-time conversion.
For loop: This is used for iterating over a sequence a specific number of times. It is also not the right choice for a one-time conversion.

Therefore, the correct response is:

if-then-else