A class is a fundamental unit of modeling in Modelica, providing the structure for an object. Classes can contain equations, where the computations are performed.

2
Creating a Class

Create a class, Add, that calculates the sum of two parameters, which are Integer numbers with given values.

2.1

Since x + y = sum is an equation and not an assignment, the equation can also be written as sum = x + y without changing the meaning of the equation.

2.1.1
Simulation of Add

When we have simulated the class Add, we can look at the values of the variables at a specific point in time by writing: val(variableName,time), here with time=0;.