What is the problem for the following code?

clc; clear all; close all;

fprintf('\n************************************************************');

fprintf('\n*** Interpolation by Newtons Forward Difference Formula *'); fprintf('\n************************************************************'); n = input('\nEnter number of data points = '); h = input('\nEnter step size (h) = ') x(1) = input('\nx0 = '); y(1) = input('y0 = '); for i=2:n x(i)=x(i-1)+h; fprintf('\nX%d = %f',i,x(i)); fprintf('\t\tY%d: ',i); y(i) = input(''); end x_reqd = input('\nEnter X for which value of Y is sought: '); s=(x_reqd-x(1))/h; for i=1:n diff(i,1)=y(i); end %% Calculate Forward Differance Table for j=2:n for i=1:n-j+1 diff(i,j)=diff(i+1,j-1)-diff(i,j-1); end end fprintf('\n\t Forward Differance Table');

%% Print Forward Differance Table offset=1; for i=0:n*2-2 index=floor(i/2); fprintf("\t\t") if mod(i,2)==0 fprintf('\n %.6f',x(index+offset)); end if n>i j_max=i else j_max=n*2-i-1 end

    for j=0:j_max
        if mod(i,2)==mod(j,2)

        fprintf('\t\t%.6f',diff(index-j/2+offset,j+offset));
        end
    end
end

[Walter Roberson]

Duplicates https://www.mathworks.com/matlabcentral/answers/664353-what-is-the-problem-for-the-following-code?s_tid=srchtitle