Step 1.1: Default values, cloning and copying

[ziimakc]

Resolves Step 1.1

Task

• Create a Point type which represents a 2D point (x and y coordinates). This type has to be Copy and Default.
• Create a Polyline type which represents a non-empty set of Points of unknown size. This type has to be Clone and non-Default.

Solution

Create Point and Polyline types with example valid/invalid usages following requirements.