For in Scilab

In Scilab, loops can be constructed using various methods. Here are some basic types of loops equivalent to the original example.

// The most basic type, with a single condition.
i = 1;
while i <= 3
    disp(i)
    i = i + 1;
end

// A classic initial/condition/after loop.
for j = 1:3
    disp(j)
end

// Another way of accomplishing the basic "do this N times" iteration.
for i = 1:3
    disp(['range ', string(i-1)])
end

// Loop without a condition will continue until a break or return.
while %T
    disp('loop')
    break
end

// You can also continue to the next iteration of the loop.
for n = 1:6
    if modulo(n-1, 2) == 0 then
        continue
    end
    disp(n-1)
end

To run this Scilab script, save it to a file (e.g., for_example.sce) and execute it in Scilab:

--> exec('for_example.sce', -1)
 1.
 2.
 3.
 1.
 2.
 3.
 range 0
 range 1
 range 2
 loop
 1.
 3.
 5.

Let’s break down the differences and similarities:

1. Scilab uses while for condition-based loops, similar to the first example in the original code.

2. The classic for loop in Scilab uses a different syntax. Instead of specifying initialization, condition, and increment separately, Scilab uses a range (1:3 means from 1 to 3).

3. Scilab doesn’t have a direct equivalent to the range function over integers. We simulate this by using a regular for loop and adjusting the output.

4. An infinite loop in Scilab is created using while %T (%T represents true).

5. Scilab supports break and continue statements similar to other languages.

6. Scilab’s indexing starts at 1, not 0, so we adjust our calculations and output accordingly.

7. Scilab uses disp() function for output instead of print or println.

These examples demonstrate various looping constructs in Scilab, covering most common use cases for iteration.