Iteration Using for-Statements

1 SumZ

The for-statement is a convenient way of expressing iteration. This fits well when you know how to express the range of values over which the iteration variable should iterate. The class SumZ contains a very simple for-loop summing the five elements of the vector z.

class SumZ parameter Integer n = 5; parameter Real[n] z = {10, 20, 30, 40, 50}; Real sum(start = 0); algorithm sum := 0; for i in 1:n loop sum := sum + z[i]; end for; end SumZ;

2 Simulation of SumZ

simulate( SumZ )
plot({z[1],sum})

3 Simulation of SumZ and HideVariable

Since the scope of the iteration variable is the body of the for-statement, it may hide other variables with the same name, like the constant k in HideVariable.

class HideVariable constant Integer k = 4; Real z[k + 1]; algorithm for k in 1:k+1 loop // The iteration variable k gets values 1, 2, 3, 4, 5 z[k] := k; end for; end HideVariable;

4 Simulation of HideVariable

simulate( HideVariable )
plot(z[3])