CareerCup

???
I wasn't ready for that one...

simpe...

void callF(Node* root, void(*fun)(void *) )
{
if(root ==NULL) return;
if(root->left) callF(root->left, fun);
if(root->right)callF(root->right, fun);

if(!root->left && !root->right)
(*fun)();

}

And here is the Java version : It uses java's reflection mechanism

public void traverseAndCallFunction(AvlNode root, String functionName)
	{
		if(root == null) return;
		else
		{
			traverseAndCallFunction(root.left, functionName);
			traverseAndCallFunction(root.right, functionName);

			if(root.left == null && root.right== null)
			{
				try{
					this.getClass().getMethod(functionName).invoke(this, (Object[]) null);
				}catch(Exception e)
				{
					e.printStackTrace();
				}
			}
		}
	}

	public void dummyFunction()
	{
		System.out.println("Dummy Function called using reflection technique of Java");
	}

I would rather it would be in JS, from the looks of it!