const function() !!??

From: Sundar (sundar_sacet_at_yahoo.com)
Date: 12/30/04 

Date: 30 Dec 2004 05:44:44 -0800

Do we have something called a const function ? I thought applying the
'const' specifier to a function is meaningless... but when i tried
defining a const function it worked !!
like...
const int func(int a)
{
    int b;
    .....
    return b;
}

       ...The above code gave no compilation errors ! :->
How should i interpret it ?
(i used MS- vc++ compiler)

Sundar