for statement

The for statement makes it convenient to execute a routine repeatly while counting iterations of a loop. It looks like this:

for i = 1:5
  x(i) = i^2;

The above code works by first evaluating the expression 1:5 to produce a range of values from 1 to 5. Then the variable i is assigned the first element of the range and

x(i) = i^2;
in the loop is executed once. And this process continues until there are no more elements to assign for i.

function z = AR3(a,x,n)
  z = x;
  for i = 4:(3+n)
    z(i) = a(1) * z(i-1) + a(2) * z(i-2) + a(3) * z(i-3);

Department of Mathematics
Last modified: 2005-10-21