Week 13 special member functions exercise

This is a slightly expanded version of the "point" example we used last week.

The file line.hpp contains the definition of a line struct. A line is defined as two points, the start and the end.

Exercise 1

• Write a constructor for line taking two points as arguments. Use the given points to initialise the start and end members of line

  You should write the declaration of the constructor in line.hpp, and the definition in line.cpp

• Add a default constructor to line which sets both members to the point (0, 0)

• In main.cpp, add assertions to test_line() to ensure your constructors are working correctly.

• Experiment with marking your constructors as = default or = delete (you will need to comment out the constructor definitions while you do this). What error messages, if any, did you see? Is this what you expected?

• (Optional, slightly harder): add a length() member function to line which returns the distance from the start point to the end point.