Why doesn't return modify the value of a parameter to a function

Question

Possible Duplicate:
How to modify content of the original variable which is passed by value?

I am building a

Answer 1

take rArea by pointer:

int FindArea(int *, int , int);

...

FindArea (&rArea , rBase , rHeight);

...



int FindArea (int *rArea , int rBase , int rHeight)
{
 *rArea = (rBase * rHeight);

 return (*rArea);

}