Swap two integers in 'C' programming Without using third variable
Programmer Rushikesh
・1 min read
Classic DEV Post from Mar 2
60
103
Trending on 
What Advice Would You Give Your 20-year-old Self?
What have been the broken promises of computer technology?
Me: "I tested and it works, why do I have to write tests?"
You don’t owe social media anything!
What tools have you built?
Do you want a code review? I want to help!
The Brilliance of Elon Musk
Auth With Twitter
Auth With GitHub
While it does have some educational value to show that this is possible, this method has two issues:
Both
a = a + banda = a - bcan cause an overflow.I can't imagine many situations where saving a few bytes really makes up for the loss in readability.
It also works with XOR (avoiding the overflow problem):
Agreed, this is definitely the way to do it.
reduced to one line:
a ^= b ^= a ^= b;