check if the stack grows up or down

Write a program to check if the stack grows up or down.
1)Using c/c++ or Java, how to track stack grow up or shrink down 
Try noting down the address of a local variable. Call another function with a local variable declared in it and check the address of that local variable and compare!.

http://www.careercup.com/question?id=1807662

void sub(int *a) {
 int b;

 if (&b > a) {
  printf("Stack grows up.");
 } else {
  printf("Stack grows down.");
 }
}

main () {
 int a;
 sub(&a);}

http://stackoverflow.com/questions/1677415/does-stack-grow-upward-or-downward