Reverse a number Dry Run in PYTHON

Reverse a number is an interactive PYTHON dry run visualizer from the While programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Reverse a number Program Code

# Reverse a number
num = int(input("Enter a number: "))
original = num
rev = 0

while num > 0:
    digit = num % 10
    rev = rev * 10 + digit
    num //= 10

print(f"Reverse of {original} = {rev}")

View the complete While programs page.