XOR operator application

As an exercise, can you think of a way to use this to exchange two integer variables without a temporary variable?

This is the question that i have seen today in cprogramming.com which is a bit tricky but it will amaze you that a XOR operator has an application like this.


a=a^b;
b=a^b;
a=b^a;

swapping two numbers using XOR operator……..

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s