how to calculate the mahalanobis distance with my data(two groups of continuous variable interce

[Reeza]

I moved your post to the IML forum. 

I believe this post from Rick Wicklin on how to write a function or use built in function. 

Proc distance will also calculate the distance. 

http://blogs.sas.com/content/iml/2012/02/22/how-to-compute-mahalanobis-distance-in-sas.html