Does the mine craft cracked version (minecraft sweet and awesome) have viruses?

It might.

If you find the game so "sweet" and "awesome", why not be legit and buy it? It's $20. I bet you spend more at Starbucks each month than that.

It all comes down to where you got it from. If it's from a website with trusted downloads you should be OK. Read comments before you get it. It might not be a great idea though, as over time you may encounter problems with it. Best bet is to just pay the 20 quid to buy the game.