Bikes are pointing their noses in the air nowadays with the help of a new gadget called the Wheelie-Bar. By attaching the device to the rear of your cycle, you can tilt back on the hind wheel; wooden skate rollers at the end of the bar let you ride high, the way stock-car dragsters do.

It's good to have a firm grip when shaking hands.

In the program given above, tree is constructed and is traversed in inorder, preorder and postorder traversal.

• Could you please come by my house tomorrow at five in the afternoon to help me?
• It's a date!