problem using counter in a for loop

I'm doing some practice problems for experience and can't get past an error with my counter with this function. What am I missing here?

Thanks in advance

function x = triangle(n)
i = 1;
for i:n-1
 x(i) = i+x(i+1); 
 i = i+1
end
end

Answer 1

[Jos (10584)]

There are at least two issues with this code:

function x = triangle(n)
i = 1;
for i:n-1
 x(i) = i+x(i+1); % (1) BOTH X(i) and X(i+1) ARE UNKNOWN, SO IT ERRORS
 i = i+1 % (2) THIS HAS NO EFFECT
end
end

As for issue 2, try this (first think would you think will be displayed ...)

for i=1:10 ; 
  disp(i)
  i = i + 7 ;
  disp (i)
end

[Mary]

Thank you!

Answer 2

[Azzi Abdelmalek]

What is this?

x(i) = i+x(i+1);

x is unkown

[Mary]

You're right... Thanks for the help.