Can i send the application for mac as a gift to my friend?

App store does not have this facility. You could send an iTunes gift card but the cards are not internationally acceptable so it would have to be one for the country your friend lives in. Read this document from Apple.

iTunes Gift Options > http://support.apple.com/kb/HT2736

If it gets difficult, I read somewhere that you could buy a gift card on line from a store in the country where your friend lives ... and have them post it to him/her.

It is another option.

Thank you for the star.