Need a code to print this in command Window

A

B C

D E F

G H I J

K L M N O

& also

D

E F

G H I

J K L M

N O P Q R

[Jan]

What exactly is the problem you want to solve. Do you have a starting character and should print 15 following characters in a triangle form to the command window? Or does a hardcoded solution starting at A and D solve the problem already? This looks like a homework, so post, what you have tried so far and ask a specific question.

Answer 1

[Jan]

fprintf('A\n', ...
        'B C\n', ...
        'D E F\n', ...
        'G H I J\n', ...
        'K L M N O\n', ...
        '& also\n', ...
        'D\n', ...
        'E F\n', ...
        'G H I\n', ...
        'J K L M\n', ...
        'N O P Q R']);

If you want something more general, please mention the details.

This sound like a homework. If this is true, post what you have tried so far and ask a specific question.

Answer 2

[Star Strider]

Keep track of the span of indices you want to print, and the current start index.

Those are given as:

s = 0;
c = 1;
for k = 1:5
    s = s + 1;                  % Current Index Span
    c = c + s;                  % Current Start Index
end

I leave the rest to you.

Note that you need to first define the string of characters as:

a = 'A':'Z';