Sum of digits of a number Dry Run in PYTHON

Sum of digits of 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.

Sum of digits of a number Program Code

# Sum of digits in a number
num = int(input("Enter a number: "))
original = num
sum_digits = 0

num = abs(num)  # Handle negative numbers

while num > 0:
    digit = num % 10
    sum_digits += digit
    num //= 10

print(f"Sum of digits of {original} = {sum_digits}")

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