Does prototype of friend function has no value?

[Rehan FASTian]

http://liveworkspace.org/code/3YEs15$2 Prototype is commented.

http://liveworkspace.org/code/3YEs15$3 Prototype is included.

both give the correct output. Why?

[vlad from moscow]

Please show your code here because not any browser can read the site you pointed.

[vlad from moscow]

Friend declaration introduces an unqualified name into the scope where it appeared.