Learning which programming language has a good earning future?

[Kapalic]

I was a ameture C programmer few years back, but almost forgot now. But I like programming. So I have decided to learn a programming language in a good depth again.

So I want to know learning which language can give me good opportunities to earn working freelance or getting a good job. What should I learn, so I can earn while having fun with it?

Thank you very much.
My aim is mainly earning. I actually want to make money with this language. So my qustion is, learning which language would be a reward for me? Whis will give me opportunity to get some freelance work or job in a big company?