What is the main error in this code and how can it be solved?

Here is the code:

a=0; b=1; c=1; d=L;

%initialization

% report pair a,b

% report pair c,d

while ~((c==1)&(d==1))

% test for end

Z = floor((L+b)/d);

e = Z*c-a;

f = Z*d-b;

% report pair e,f

b=d; d=f; a=c; c=e;

end

İt says there's an error at line 1. I ve to declare the variable of L

Answer 1

[Riccardo Scorretti]

Simply, the variable L is undefined. That is, you must assign a value to it before you use it, for instance by:

L=2; a=0; b=1; c=1; d=L; 

Of course the particular value you have to use for L depends on the particular problem you want to solve.

[Baris Unsal]

İt gives an another problem too, in line 7. What s the main problem, what can be the main thing about

Z= floor((L+b)/d)

[Riccardo Scorretti]

I cannot see any problem at the line you mentioned: the code runs with no error, provided that a correct value for L is defined (see below). We can help you with Matlab, but it is up to you to define the correct value for the variable L.

L = 2;      % <-- This particular value depends on what you want to compute
a = 0; b = 1; c = 1; d = L; 
%initialization
% report pair a,b
% report pair c,d 
while ~((c==1)&(d==1)) 
    % test for end
    Z = floor((L+b)/d);
    e = Z*c-a;
    f = Z*d-b; 
    % report pair e,f
    b=d; d=f; a=c; c=e;
end
fprintf('Z = %f , e = %f , f = %f\n', Z, e, f);

Z = 1.000000 , e = 1.000000 , f = 1.000000