Exercise 1

1 Using replaceable and redeclare on class Point

Point is a built-in type in Modelica.

class Point parameter Real x; parameter Real y; parameter Real z; end Point;

Create a class Redeclaration, containing a Point P as a variable. You should set the values of x, y and z as well.

class Redeclaration //... end Redeclaration;

In the class below you should redeclare P as the type myPoint, which is a subtype of Point (you can write myPoint further below).

class PointRed end PointRed;

You can declare the class myPoint here, below.

1.1 Hint

The variable P must be declared replaceable in class Redeclaration.

1.2 Answer

2 Question

If you instead had a class MyPoint with z as an Integer. Would that work?

class MyPoint parameter Real x; parameter Real y; parameter Integer z = 4; end MyPoint;

2.1 Answer