[Solved] Identify the error in this code snippet: import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) GPIO.input(18) GPIO.setup(18, GPIO.IN) | Raspberry Pi

Raspberry Pi - GPIO Basics with Python

Identify the error in this code snippet:

import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.input(18)
GPIO.setup(18, GPIO.IN)

AGPIO.input called before GPIO.setup

BGPIO.setup uses wrong pin number

CGPIO.setmode is missing

DNo error, code is correct

Step-by-Step Solution

Solution:

Step 1: Check order of GPIO calls
GPIO pins must be set up before reading input. Here, GPIO.input(18) is called before GPIO.setup(18, GPIO.IN), which is incorrect.
Step 2: Verify other parts
Pin number 18 is consistent, and GPIO.setmode(GPIO.BCM) is present. So no error there.
Final Answer:
GPIO.input called before GPIO.setup -> Option A
Quick Check:
GPIO.input called before GPIO.setup = D [OK]

Quick Trick: Always setup pins before reading input [OK]

Common Mistakes:

Master "GPIO Basics with Python" in Raspberry Pi

9 interactive learning modes - each teaches the same concept differently

More Raspberry Pi Quizzes

Identify the error in this code snippet: