Method 3: Swap using addition and subtraction Dry Run in PYTHON

Method 3: Swap using addition and subtraction is an interactive PYTHON dry run visualizer from the Io 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.

Method 3: Swap using addition and subtraction Program Code

# Method 3: Using addition and subtraction
a = int(input("Enter first number: "))
b = int(input("Enter second number: "))

print(f"\nBefore swap: a = {a}, b = {b}")

# Swapping using arithmetic operations
a = a + b  # a becomes sum (10+20=30)
b = a - b  # b becomes original a (30-20=10)
a = a - b  # a becomes original b (30-10=20)

print(f"After swap: a = {a}, b = {b}")

View the complete Io programs page.